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Quiz 3: Momentum, Work & Energy

Total questions: 26

Worksheet time: 1hrs 10mins

Name
Class
Date
1.

Two objects of different masses slide down a hill of the same height. How do their velocities compare?

a)

They have the same velocity

b)

The lighter object is half as fast

c)

The heavier object is twice is fast

d)

not enough information provided

2.

Energy can never be created nor destroyed only changed from one form to another but the total amount of energy remains the same.

a)

Law of conservation of energy

b)

Law of conservation of momentum

c)

Energy creation theory

d)

Energy constant formula

3.

___________ is energy in motion

a)

Potential Energy

b)

Kinetic Energy

c)

Newton’s 2nd Law

d)

Newton’s 3rd Law.

4.

_______ is stored energy.

a)

Potential Energy

b)

Kinetic Energy

c)

Newton’s 2nd Law

d)

Newton’s 3rd Law.

5.

Momentum can never be created nor destroyed only transferred from one object to another but the total amount of momentum in the system remains the same.

a)

Law of conservation of energy

b)

Law of conservation of momentum

c)

Energy creation theory

d)

Energy constant formula

6.

Two objects of different masses slide down a hill of the same height. How do their momentum compare?

a)

They have the same momentum

b)

The lighter object has less momentum

c)

The heavier object has less momentum

d)

not enough information provided

7.
Which player has more momentum?
a)
Same Momentum
b)
Base Runner
c)
Catcher
d)
None of the above
8.
If a moving ship is loaded with iron ore so that its mass is doubled, the amount of its momentum would   __________ .
a)
 stay the same
b)
also double
c)
reduce by half
d)
 increase by an unknown amount
9.
The unit for momentum is:
a)
Newton’s 
b)
Joules
c)
Kg m/s
d)
m/s 
10.

The unit for energy is:

a)

Newton’s

b)

Joules

c)

Kg m/s

d)

m/s

11.
A softball is pitched very fast while another softball of equal mass is pitched at half the velocity. Therefore it can be said that the fast moving softball will be harder to stop because it has _________________ momentum. 
a)
more
b)
less
c)
equal
12.

A student releases a ball from a height of 1.5 m above the floor.

Which of the following statements best describes the energy of the ball as it falls?

a)

Its potential energy is changed to kinetic energy.

b)

The total amount of its kinetic energy increases.

c)

Its kinetic energy is changed to potential energy.

d)

The total amount of its mechanical energy decreases.

13.

As a student walks downhill at constant speed,

his gravitational potential energy

a)

increases and his kinetic energy increases

b)

increases and his kinetic energy remains the

same

c)

decreases and his kinetic energy increases

d)

decreases and his kinetic energy remains the

same

14.

A bat hits a baseball in the ideal physics world. The total momentum _____ after the collision.

a)

increased

b)

decreases

c)

remains constant

d)

stays at zero

15.

Collisions where objects BOUNCE apart.

a)

inelastic collisions

b)

elastic collisions

c)

explosions

d)

none of these

16.

Collision where objects collide, and stick together.

a)

inelastic collision

b)

elastic collision

c)

explosion

d)

none of these

17.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
18.

What is the equation for Kinetic Energy (KE)?

a)

KE = 2mv2KE\ =\ 2mv^2

b)

KE = 2mvKE\ =\ 2mv

c)

KE = mv2KE\ =\ mv^2

d)


KE = 12mv2KE\ =\ \frac{1}{2}mv^2

19.

At which point on the roller coaster is the kinetic energy at its maximum?

a)

A

b)

B

c)

C

d)

D

20.

Decide if the pictures below illustrate work or no work.

Drag and drop if the pictures are showing work or no work.

a)
1.

work

b)
2.

work

c)
3.

no work

d)
4.

work

e)
5.

no work

21.
When you carry an object, is work done on it?
a)
Yes, force is applied in the same direction as the distance it travels.
b)
No, force is applied in a different direction than distance traveled.
22.
____________ is the ability to cause change. 
a)
Energy 
b)
Force 
c)
Friction
d)
Motion
23.
Energy can not be created or destroyed, only converted from one form to another.
a)
true
b)
false
24.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
25.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases 
c)
The kinetic energy decreases while the potential energy increases 
d)
Bothe the potential energy and kinetic energy increase 
26.
How do you calculate power?
a)
P = W/t
b)
P = E/t
c)
P = w * t
d)
P = bbq/chicken

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