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10_Phys Final Part 1

Last updated about 6 years ago

20 questions

Note from the author:

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Physics

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

1

1

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Question 20

20.

 Force is the product of ...

Mass and acceleration

Matter and energy

Speed and weight

Mass and charge

Particles and waves

What is the velocity-time graph for this motion?

a. 

b.

c.

d.

C

D

B

A

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

A  force

acceleration

speed

energy

mass

Balanced forces cause a change in motion.

True

False

If gravity pulls you towards the centre of the Earth, why don't you fall through the pavement?

Because pavement does not react as an unbalanced force

Because gravity does not react as an unbalanced force

Because the pavement exerts an equal force in the opposite direction

Because gravity doesn't act through pavements

All of the following statements are true, except...

A moving object travels in a line until a force changes its direction

A moving object carries on moving until a force stops it

A moving object eventually runs out of force and slows down

An object is at rest because all the forces around it are balanced

Question 7

7.

Question 8

8.

Which concept means energy in motion?

C friction

B potential energy

A kinetic energy

D gravity

Which concept means stored energy of an object due its position ?

B potential energy

D gravity

C friction

A kinetic energy

What is the velocity-time graph for this motion?
a. 

b.

c.

d.

B

A

C

D

What is the acceleration-time graph for this motion?
a. 

b.

c.

d.

A

C

D

B

Where can we find the coefficient of dynamic friction in this graph?

A

B

C

At this point, we are pushing the object however far from moving it.

C

A

B

Is mass the same as weight?

Yes, because weight is the same force to gravity in a mass.

No, because weight is a force due to gravity in a mass.

No, because they have different forces.

Yes, because they have equal forces.

What is the magnitude (value) of the gravity with the correct units?

9.81 m2/s

-9.81 m/s

9.81 m/s

9.81 m/s2

What is the magnitude of the initial velocity when we drop an iPhone X?

0 m/s

9.81 m/s

9.81 m/s2

0 m/s2

In this example, if the reference is the person, what is the correct expression for displacement of the iPhone X once hits the floor?

+220 m/s

- 220 m/s

+ 220 m

- 220 m

If this is an example of 1st Newton's Law, what is the correct magnitude and direction of the missing force?

Any force that is not - 20N

+20 N

- 20N

Any force that is not 20N

If this is an example of 2nd Newton's Law, what does +5N represent?

Friction force

Unbalanced force

coefficient of static friction

Normal Force

A

D

B

C

A

D

B

C