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Test Unit 1.2 and 2 Oct 18 2019 Phy-1

Posljednje ažuriranje over 6 years ago

34 questions

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

4

4

4

Pitanje 1

1.

First row

Second row

Third row

Fourth row

Pitanje 2

2.

First row

Second row

Third row

Fourth row

Pitanje 3

3.

2 mv Cos ø

2 mv Sin ø

zero

mv

Pitanje 4

4.

In inelastic collision...

neither momentum nor kinetic energy are conserved.

kinetic energy is conserved but momentum is not.

momentum is conserved but kinetic energy is not.

momentum and kinetic energy are both conserved.

Pitanje 5

5.

First row

Second row

Third row

Fourth row

Pitanje 6

6.

Remember in this type of graph, there is a time for stopping the object and another for changing the direction.

B

D

C

A

Pitanje 7

7.

The momentum of a particle stays constant provided that

it moves in a circle with constant speed.

the net external force acting on it is zero.

the net internal force acting on it is zero.

its acceleration is uniform.

Pitanje 8

8.

Pitanje 9

9.

15N

25 N

30 N

45 N

Pitanje 10

10.

1st row

2nd row

3rd row

4th row

Pitanje 11

11.

A

B

C

D

Pitanje 12

12.

First row

Second row

Third row

Fourth row

Pitanje 13

13.

A

B

C

D

Pitanje 14

14.

What does the area under the line represent in Force - distance graph?

Impulse

Work done

Spring constant

acceleration

Pitanje 15

15.

800 N

500 N

300 N

250 N

Pitanje 16

16.

If the mass of the car is 1,000 kg, how much is the force of the engine (thrust)?

300 N

500 N

800 N

1000 N

Pitanje 17

17.

If an object is sliding down at constant speed with friction. Find the magnitude of F.

W Cos ø

R Cos ø

W Sin ø

R Sin ø

Pitanje 18

18.

If an object is sliding down at constant speed with friction. Find the magnitude of R.

W Cos ø

R Cos ø

W Sin ø

R Sin ø

Pitanje 19

19.

1st figure

2nd figure

3rd figure

4th figure

Pitanje 20

20.

1st figure

2nd figure

3rd figure

4th figure

Pitanje 21

21.

1st figure

2nd figure

3rd figure

4th figure

Pitanje 22

22.

The time taken for a stone dropped from rest to fall vertically through 16 m is 2.0 s. Based on these measurements, what is the best estimate for the acceleration of free fall?

2 ms^-2

4 ms^-2

8 ms^-2

9.81 ms^-2

Pitanje 23

23.

d_¹ / t₁

∆d / t₁

Gradient of tangent at P

The shaded area

Pitanje 24

24.

Which graph shows the velocity when we have a constant net force in a system starting from rest.

A

B

C

D

Pitanje 25

25.

Which graph shows the velocity when we have a constant net force in a system when there already an initial velocity of the object.

A

B

C

D

Pitanje 26

26.

Find the change in velocity:

16 ms^-1

12 ms^-1

8 ms^-1

4 ms^-1

Pitanje 27

27.

D

C

B

A

Pitanje 28

28.

A

B

C

D

Pitanje 29

29.

A

B

C

D

Pitanje 30

30.

A

B

C

D

Pitanje 31

31.

Choose the correct answer and show your work!!!

Pitanje 32

32.

SHOW YOUR WORK!!!!!!!!

Pitanje 33

33.

A body of mass 2.0 kg (initially at rest) slides down a curved path of total length 22 m. The body starts from a vertical height of 5.0 m from the bottom. When it reaches the bottom, its speed is measured and found to equal 6.0 ms^-1.
a) Find the energy lost in the friction.
b) Assuming the force to have constant magnitude, determine the magnitude of the force of friction exerted by the work of friction.

Pitanje 34

34.

Choose the correct answer and show your work.
Remember that this type of graph has two times, one to stop the object and another for changing the direction of it.