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Biblioteka

P5 Forces

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Posljednje ažuriranje 3 days ago
159
4.5.1.1 Scalar and vector quantities
1
4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
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4.5.1.1
4.5.1.2 Contact and non-contact forces
1
4.5.1.2
1
4.5.1.2
1
4.5.1.2
4.5.1.3 Gravity
1
4.5.1.3
Obavezno
1
4.5.1.3
Obavezno
1
4.5.1.3
1
4.5.1.3
1
4.5.1.3
4.5.1.4 Resultant forces
1
4.5.1.4
4.5.6.2.1
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4.5.1.4
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4.5.1.4
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4.5.1.4
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4.5.1.4
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4.5.1.4
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4.5.1.4
4.5.6.2.1
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4.5.1.4
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4.5.1.4
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4.5.1.4
1
4.5.1.4
4.5.2 Work done and energy transfer
1
4.5.2
4.5.3 Forces and elasticity
4.5.4 Moments, levers and gears
4.5.5.1.1 Pressure in a fluid 1
4.5.5.1.2 Pressure in a fluid 2
4.5.5.2 Atmospheric pressure
4.5.6.1.1 Distance and displacement
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
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4.5.6.1.1
4.5.6.1.2 Speed
1
4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
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4.5.6.1.2
4.5.6.1.3 Velocity
1
4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
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4.5.6.1.3
4.5.6.1.4 The distance–time relationship
1
4.5.6.1.4
1
4.5.6.1.4
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4.5.6.1.4
1
4.5.6.1.4
4.5.6.1.5 Acceleration
Obavezno
1
4.5.6.1.5
Obavezno
1
4.5.6.1.5
1
4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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WS3.7
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
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4.5.6.1.5
Obavezno
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4.5.6.1.5
Obavezno
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4.5.6.1.5
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4.5.6.1.5
4.5.6.2.1 Newton's First Law
1
4.5.6.2.1
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4.5.1.4
4.5.6.2.1
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4.5.6.2.1
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4.5.6.2.1
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4.5.6.2.1
4.5.6.2.2
4.5.6.2.3
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4.5.6.2.1
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4.5.1.4
4.5.6.2.1
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4.5.6.2.1
4.5.6.2.2 Newton's Second Law
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4.5.6.2.2
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4.5.6.2.1
4.5.6.2.2
4.5.6.2.3
1
4.5.6.2.2
4.5.6.2.3 Newton's Third Law
1
4.5.6.2.3
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4.5.6.2.1
4.5.6.2.2
4.5.6.2.3
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4.5.6.2.3
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4.5.6.2.3
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4.5.6.2.3
4.5.6.3.1 Stopping distance
4.5.6.3.2 Reaction time
4.5.6.3.3 and 4.5.6.3.4 Factors affecting braking distance
1
4.5.6.3.1
4.5.6.3.2
…
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4.5.6.3.1
4.5.6.3.2
…
4.5.7.1 Momentum is a property of moving objects
4.5.7.2 Conservation of momentum
4.5.7.3 Changes in momentum
Pitanje 1
1.

Velocity is a scalar quantity.

Pitanje 2
2.

Speed is a vector quantity.

Pitanje 3
3.

Displacement includes direction.

Pitanje 4
4.

Weight is a vector quantity.

Pitanje 5
5.

Distance is a vector quantity.

Pitanje 6
6.

Acceleration is a vector quantity.

Pitanje 7
7.

Temperature is a scalar quantity.

Pitanje 8
8.

Force is a scalar quantity.

Pitanje 9
9.

Mass is a scalar quantity.

Pitanje 10
10.

Which of the following are vectors?

Pitanje 11
11.

Which of the following represent scalar quantities?

Pitanje 12
12.

Select the vectors from this list:

Pitanje 13
13.

Which of the following is NOT a vector quantity?

Pitanje 14
14.

Why is distance a scalar quantity?

Pitanje 15
15.
Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

Vector

arrow_right_alt

Magnitude (number value) only

Scalar

arrow_right_alt

Magnitude and direction

Pitanje 16
16.

Sort your scalar and vector quantities

  • distance

  • displacement

  • speed

  • velocity

  • mass

  • weight

  • energy

  • acceleration

  • power

  • force

  • time

  • length, area, volume

  • temperature

  • Vector

  • Scalar

Pitanje 17
17.

Which of the following are vectors?

Pitanje 18
18.

Select the vectors from this list:

Pitanje 19
19.

Which of the following represent scalar quantities?

Pitanje 20
20.

Scalars have magnitude but vectors have magnitude and __________. What one word completes the sentence?

Pitanje 21
21.

True or false? There is no difference between speed and velocity.

Pitanje 22
22.

What force is represented by A?

Pitanje 23
23.

What force is represented by C?

Pitanje 24
24.

Sort contact and non-contact forces

  • Magnetic force

  • Electrostatic force

  • Gravitational Force

  • Friction

  • Air Resistance

  • Water Resistance

  • Contact Force

  • Non-Contact Force

Pitanje 25
25.

A kilogram is a measure of an object's

Pitanje 26
26.

What is the unit of measurement for mass?

Pitanje 27
27.

What does the term 'mass' refer to in science?

Pitanje 28
28.

The bicycle had a mass of 15 kg.

gravitational field strength = 9.8 N/kg

Calculate the weight of the bicycle.

Use the equation:

weight = mass × gravitational field strength

Pitanje 29
29.

A kilogram is a measure of an object's

Pitanje 30
30.

To calculate resultant force:

Pitanje 31
31.

The Newton is a unit of

Pitanje 32
32.

A box of textbooks is pulled to the right by a force of 10 Newtons and to the left by a force of 5 Newtons. The net force is

Pitanje 33
33.

The mass of the person was 75 kg.

Calculate the resultant force on the person when the deceleration was 60 m/s2

Use the equation:

resultant force = mass × deceleration

Pitanje 34
34.

At the start of the race, 6 dogs pulled on the rope.

The average forward force on the sled from each dog was 370 N.

The backwards force on the sled from friction was 520 N.

Calculate the resultant force on the sled.

Pitanje 35
35.

Later in the race, the sled moved at a constant speed along a flat, horizontal path.

What was the relationship between the size of the horizontal forces acting when the sled moved at a constant speed?

Pitanje 36
36.

To calculate resultant force:

Pitanje 37
37.

The Newton is a unit of

Pitanje 38
38.

A box of textbooks is pulled to the right by a force of 10 Newtons and to the left by a force of 5 Newtons. The net force is

Pitanje 39
39.

At the start of the race, 6 dogs pulled on the rope.

The average forward force on the sled from each dog was 370 N.

The backwards force on the sled from friction was 520 N.

Calculate the resultant force on the sled.

Pitanje 40
40.

Later in the race, the sled moved at a constant speed along a flat, horizontal path.

What was the relationship between the size of the horizontal forces acting when the sled moved at a constant speed?

Pitanje 41
41.

As the student accelerated downhill, the forward force on the student was 250 N.

The work done by the forward force was 4500 J.

Calculate the distance travelled as the student accelerated downhill.

Use the equation:

distance travelled = work done / force

Pitanje 42
42.

Which of the following is the unit for distance?

Pitanje 43
43.
Pitanje 44
44.

Pitanje 45
45.

What type of quantity is displacement?

Pitanje 46
46.

A student went on a cycling journey that lasted for three days.

The student recorded information about the journey using a cycling app on a mobile phone.

At the start of the journey, the student travelled along a straight road to a road junction.

A map on the cycling app showed the road.

Figure 5 shows the map.

The scale of the map is 1 cm : 20 m

Calculate the distance travelled by the student between the start and the box road junction.

Pitanje 47
47.

If the cyclist had gone 4 squares worth, have far would that be?

Pitanje 48
48.

Most of the roads on the journey were not straight.

Figure 7 shows a map of the route taken for the whole journey.

The line in Figure 7 represents the total distance travelled when the student reached the end of the journey.

How does the total distance travelled compare with the magnitude of the displacement of the student from the start?

Pitanje 49
49.

Calculate the total distance travelled by the student.

Pitanje 50
50.
Pitanje 51
51.

What type of quantity is displacement?

10
4.5.6.1.2
MS4a
10
4.5.6.1.2
MS4a
10
Pitanje 54
54.

Use the data in the graph to list the six fish in order from slowest to fastest.

4.5.6.1.2
MS4a
Pitanje 55
55.

What is speed?

Pitanje 56
56.

Total distance divided by total time is

Pitanje 57
57.

If a person walked at 2 m/s for 12 s he/she would travel a distance of ________.

Pitanje 58
58.

What are the units used in physics for speed?

Pitanje 59
59.

A runner completes a 300 meter race with a time of 13.75 seconds. What is the runner’s speed? (2 d.p. please)

Pitanje 60
60.

Calculate the average speed of a lion that runs 45 meters in 5 seconds . What is the speed of the lion?

Pitanje 61
61.

Which of the following is a factor in a person's walking speed?

Pitanje 62
62.

What is the speed of sound in air at 0°C?

Pitanje 63
63.

What is a typical speed for a person cycling?

Pitanje 64
64.

What is a typical speed for a person walking?

Pitanje 65
65.

What are the SI units for speed?

Pitanje 66
66.

What is the approximate speed of sound in air in metres per second?

Pitanje 67
67.

A teacher tells his class that a train is moving at 40 miles per hour. Does this tell them the speed of the train, the velocity of the train, or both?

Pitanje 68
68.

Two cars are travelling side by side down a straight road in the same direction. Both cars are travelling at a speed of 22m/s. What is their relative speed?

Pitanje 69
69.

A car completes a journey in 2 hours. Its average speed over this journey was 45 mph. Calculate the distance travelled by the car in miles. Answer in mph

Pitanje 70
70.

A cyclist travels at 6 m/s for 12 s. What distance has she travelled?

Pitanje 71
71.

What is a typical speed for a person running?

Pitanje 72
72.

What is a typical speed for a person walking?

Pitanje 73
73.

A cyclist travels at 6 m/s for 12 s. What distance has she travelled?

1
4.5.6.1.2
1
4.5.6.1.2
1
4.5.6.1.2
1
4.5.6.1.2
Pitanje 78
78.

After entering the water, the person decelerated for a time of 0.35 s.

The deceleration of the person was 60 m/s2

Calculate the change in velocity of the person.

Use the equation:

change in velocity = deceleration × time

Pitanje 79
79.

In a dog-sled race, a team of dogs pull on a rope attached to a sled.

Figure 12 shows a dog-sled team.

Use the Physics Equations Sheet to answer questions 06.1 and 06.2.

Pitanje 80
80.

The longest dog-sled race in the world covers a distance of 1 500 000 m.

One team finished the race in a time of 670 000 s.

Calculate the average speed of this team during the race.

Pitanje 81
81.

What does the gradient of the graph in Figure 13 represent?

Pitanje 82
82.

What is speed?

Pitanje 83
83.

Total distance divided by total time is

Pitanje 84
84.

If a person walked at 2 m/s for 12 s he/she would travel a distance of ________.

Pitanje 85
85.

What are the units used in physics for speed?

Pitanje 86
86.

A runner completes a 300 meter race with a time of 13.75 seconds. What is the runner’s speed? (2 d.p. please)

Pitanje 87
87.

Calculate the average speed of a lion that runs 45 meters in 5 seconds . What is the speed of the lion?

Pitanje 88
88.

Which of the following is a factor in a person's walking speed?

Pitanje 89
89.

What is the speed of sound in air at 0°C?

Pitanje 90
90.

What is a typical speed for a person cycling?

Pitanje 91
91.

What is a typical speed for a person running?

Pitanje 92
92.

What are the SI units for speed?

Pitanje 93
93.

A teacher tells his class that a train is moving at 40 miles per hour. Does this tell them the speed of the train, the velocity of the train, or both?

Pitanje 94
94.

Two cars are travelling side by side down a straight road in the same direction. Both cars are travelling at a speed of 22m/s. What is their relative speed?

Pitanje 95
95.

A cyclist travels at 6 m/s for 12 s. What distance has she travelled?

Pitanje 96
96.

A car completes a journey in 2 hours. Its average speed over this journey was 45 mph. Calculate the distance travelled by the car in miles. Answer in mph

Pitanje 97
97.

What is a typical speed for a person running?

Pitanje 98
98.

What is a typical speed for a person walking?

Pitanje 99
99.

A cyclist travels at 6 m/s for 12 s. What distance has she travelled?

Pitanje 100
100.

The longest dog-sled race in the world covers a distance of 1 500 000 m.

One team finished the race in a time of 670 000 s.

Calculate the average speed of this team during the race.

Pitanje 101
101.

Velocity is different from speed because it has both size and... what?

Pitanje 102
102.

What type of quantity is velocity?

Pitanje 103
103.

Velocity is

Pitanje 104
104.

According to the Velocity vs Time graph, what is the object's motion for Segment 1?

Pitanje 105
105.

According to the Velocity vs Time graph, what is the object's motion for Segment 2?

Pitanje 106
106.

According to the Velocity vs Time graph, what is the object's motion for Segment 3?

Pitanje 107
107.

According to the Velocity vs Time graph, what is the object's motion for Segment 4?

Pitanje 108
108.

According to the Velocity vs Time graph, what is the object's motion for Segment 5?

Pitanje 109
109.

According to the Velocity vs Time graph, does the object rest at any point?

Pitanje 110
110.

During which segment(s) is the object accelerating?

Pitanje 111
111.

Calculate the acceleration between 0s and 4s.

Pitanje 112
112.

Describe the motion of the object between 4s and 8s.

Pitanje 113
113.

Velocity is different from speed because it has both size and... what?

Pitanje 114
114.

What type of quantity is velocity?

Pitanje 115
115.

Velocity is

Pitanje 116
116.

Below is a graph showing the motion of a person.

What is the person doing from A to B?

Pitanje 117
117.

Below is a graph showing the motion of a person.

What is the person doing from E to F?

Pitanje 118
118.

Below is a graph showing the motion of a person.

What is the person doing from B to C?

Pitanje 119
119.

Below is a graph showing the motion of a person.

at what point he person is moving with a fast cosntant speed ?

Pitanje 120
120.

Changes in our speed and direction are called _________.

Pitanje 121
121.

Why does a car accelerate as it rounds a corner at a constant speed?

Pitanje 122
122.

What causes a great change in acceleration?

Pitanje 123
123.

Two students investigated how the acceleration of a trolley depends on the force applied to the trolley.

Before starting the investigation, each student wrote a hypothesis.

Hypothesis of student A:

‘The acceleration of the trolley is directly proportional to the force applied to the trolley.'

Hypothesis of student B:

‘Changing the force applied to the trolley will change the acceleration of the trolley.'

(a)     Consider the hypothesis of student A.

Predict what would happen to the acceleration of the trolley if the force applied to the trolley is doubled.

Pitanje 124
124.

 b) Why is it difficult to make a valid prediction using the hypothesis of student B?

Pitanje 125
125.

Figure 1 shows some of the equipment used by the students.

Figure 1

(c)     Write a list of any other equipment the students will need to complete the investigation.


Pitanje 126
126.

Why should the students use a sloping runway?

Pitanje 127
127.

d) Describe a method the students could have used for their investigation.

Pitanje 128
128.

The students used the same trolley throughout the investigation.

Suggest why.


Pitanje 129
129.

State what happens to an object in free fall initially.

Pitanje 130
130.

Which of the following is not a terminal velocity from the graph

Pitanje 131
131.

What has happened to a skydiver at Point B?

Pitanje 132
132.

As the velocity of a falling object increases, the air resistance on that object…

Pitanje 133
133.

A parachute protects a skydiver by…

Pitanje 134
134.

Explain what is happening to a skydiver at point A

Pitanje 135
135.

A parachute will make a skydiver move upwards in the air.

Pitanje 136
136.

The gradient of the graph represents acceleration.

How does Figure 6 show that the acceleration was constant?

Pitanje 137
137.

What is the equation for acceleration from your equation sheet?

Pitanje 138
138.

The stopping distance of a car is affected by the condition of the brakes and tyres.

A car is being driven around a corner when the driver sees some roadworks.

The driver applies the brakes when the car is 24 m away from the roadworks.

The velocity of the car changes from 18 m/s to 0 m/s.

Calculate the constant deceleration needed to stop the car in a distance of 24 m.

Pitanje 139
139.

Changes in our speed and direction are called _________.

Pitanje 140
140.

Why does a car accelerate as it rounds a corner at a constant speed?

Pitanje 141
141.

What causes a great change in acceleration?

Pitanje 142
142.

Which statement is true?

Pitanje 143
143.

To calculate resultant force:

Pitanje 144
144.

Newton’s First Law is also known as the law of

Pitanje 145
145.

If an object is at rest, what must be applied to get it moving?

Pitanje 146
146.

Define all Three of Newton's Law

  • For every action, there is an opposite and equal reaction.

  • Force equals mass times acceleration

  • An object in motion remains in motion, an object at rest remains at rest.

  • Newton's 1st Law

  • Newton's 2nd Law

  • Newton's 3rd Law

Pitanje 147
147.

Which statement is true?

Pitanje 148
148.

To calculate resultant force:

Pitanje 149
149.

If an object is at rest, what must be applied to get it moving?

Pitanje 150
150.

Force is the product of ...

Pitanje 151
151.

Define all Three of Newton's Law

  • For every action, there is an opposite and equal reaction.

  • Force equals mass times acceleration

  • An object in motion remains in motion, an object at rest remains at rest.

  • Newton's 1st Law

  • Newton's 2nd Law

  • Newton's 3rd Law

Pitanje 152
152.

Force is the product of ...

Pitanje 153
153.

According to Newton's Third Law, for every action there is an equal and opposite

Pitanje 154
154.

Define all Three of Newton's Law

  • For every action, there is an opposite and equal reaction.

  • Force equals mass times acceleration

  • An object in motion remains in motion, an object at rest remains at rest.

  • Newton's 1st Law

  • Newton's 2nd Law

  • Newton's 3rd Law

Pitanje 155
155.

The rope exerted a force on the sled when the sled was moving.

What is the Newton’s Third Law pair to the force of the rope on the sled?

Pitanje 156
156.

According to Newton's Third Law, for every action there is an equal and opposite

Pitanje 157
157.

The rope exerted a force on the sled when the sled was moving.

What is the Newton’s Third Law pair to the force of the rope on the sled?

Pitanje 158
158.

As a safety measure, the speed limit on the road was reduced.

Explain how the safety of road users is affected by:

• the condition of the brakes and tyres

• reduced speed.

Sort the reasons into thinking and braking

  • decreased speed

  • condition of tyres

  • poor condition of breaks

  • Thinking Distance

  • Breaking Distance

Pitanje 159
159.

A robot moves from point A to point B following the path shown in the diagram below. What is the magnitude of the robot's displacement when it reaches point B?

Pitanje 52
52.

Which of the six fish is the fastest swimmer?

Pitanje 53
53.

Which of the six fish is the slowest swimmer?

Pitanje 74
74.

What is the formula for speed?

Pitanje 75
75.

How far did Ian walk?

Pitanje 76
76.

What is the speed?

Pitanje 77
77.

How long was the journey?