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Physics Final test 2

Total questions: 27

Worksheet time: 15mins

Name
Class
Date
1.

An object on a free fall is also affected by Air resistance

a)

false

b)

true

2.

According to Newton's First Law an object at rest remains at rest unless it is acted upon by an internal force. True or false

a)

False

b)

True

3.

if the resultant force is 0 on an object then, ...

a)

the object is stationary

b)

the object is accelerating

c)

the object is moving at a constant speed

d)

the object is decelerating

4.

if an object is thrown up into the air, the direction of resultant force will be going . . .

a)

left

b)

right

c)

up

d)

down

e)

resultant force is 0

5.

Using Figure 1. Identify the forces acting on the car

a)

tension force

b)

force of gravity

c)

friction force

d)

applied force

e)

normal force

6.

The force with which the earth, moon, or other massively large objects attracts another object towards itself is called_________.

a)

frictional force

b)

normal force

c)

gravitational force

d)

applied force

e)

tension force

7.

The force that is put into an object by another person or object is _____________.

a)

frictional force

b)

normal force

c)

gravitational force

d)

applied force

e)

tension force

8.

___________  is the support force exerted upon an object that is in contact with another stable surface.

a)

frictional force

b)

normal force

c)

gravitational force

d)

applied force

e)

tension force

9.

___________ is the force transmitted through a string, rope or cable or wire when its pulled tight from opposing sides  

a)

frictional force

b)

normal force

c)

gravitational force

d)

applied force

e)

tension force

10.

Using figure 2, what forces are acting on the ball?

a)

spring force

b)

gravitational force

c)

applied force

d)

tension force

e)

air resistance

11.

Using Figure 2. when the man  threw the ball upward with an velocity of 10m/s, what will be the velocity of the object going down?

a)

0 m/s

b)

5 m/s

c)

-10 m/s

d)

15 m/s

12.

Using Figure 1. when the ball reaches the peak and the ball start to fall down, what will be the velocity of the Ball?

a)

0 m/s

b)

5 m/s

c)

10 m/s

d)

15 m/s

13.

Using Figure 3. What forces will be observed in this situation.

a)

force of gravity

b)

friction force

c)

air resistance

d)

normal force

e)

tension force

14.

If an object in a free  fall the acceleration due to gravity is -9,8 m/s/s. True or false?

a)

True

b)

False

15.

If a rock is dropped from a height of 20 feet and goes into a free  fall the acceleration due to gravity will be -9.8 m/s/s. What will be the initial velocity?

a)

0

b)

1

c)

2

d)

3

e)

4

16.

The force of gravity is always present on object here on earth. True or false

a)

True

b)

False

17.

Figure 7

Identify the forces on this body

a)

spring force

b)

tension force

c)

normal force

d)

applied force

e)

Force of gravity

18.

The quantity of motion of a moving body, measured as a product of its mass and velocity is _______.

a)

Impulse

b)

Momentum

c)

Elastic Collision

d)

Kinetic Energy

19.

_______ is the force multiplied by the time it is applied

a)

Impulse

b)

Momentum

c)

Elastic Collision

d)

Kinetic Energy

20.

In perfectly inelastic collisions what happens to the momentum?

a)

Conserved

b)

not conserved

c)

lost immediately

d)

lost gradually

21.

According to the impulse -momentum theorem, it states that the change in the impulse is equal to the change in momentum. True or false

a)

True

b)

False

22.

In the Newton's cradle the momentum is not conserved but the energy is conserved. True or False.

a)

True

b)

False

23.

The unit for momentum is

a)

p=mv

b)

kg.m/s/s

c)

FxT

d)

N.s

e)

kg.m/s

24.

The unit for impulse is

a)

p=mv

b)

kg.m/s/s

c)

FxT

d)

N.s

e)

kg.m/s

25.

the factors that affect impulse are

a)

velocity

b)

force

c)

mass

d)

time

e)

speed

26.

Using image 1, What type of collision is shown in the image

a)

Elastic collision

b)

inelastic collision

c)

perfectly inelastic

27.

Using image 2, What type of collision is shown in the image

a)

Elastic collision

b)

inelastic collision

c)

perfectly inelastic