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Physics Chapter 5 Review

Total questions: 31

Worksheet time: 38mins

Name
Class
Date
1.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
same
2.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
c)
Both potential and kinetic energy
d)
none of the above
3.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
4.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
5.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
6.
What are the two factors that affect kinetic energy?
a)
time and energy
b)
power and mass
c)
mass and speed
d)
time and work
7.

What is the unit of measurement for work and energy

a)

Newton

b)

Joule

c)

Watt

d)

Kilogram

8.

Energy due to motion is ___________________________.

a)

potential energy

b)

friction energy

c)

thermal energy

d)

kinetic energy

9.

The neighbor's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs?

a)

8.5 J

b)

45 J

c)

7.5 J

d)

22.5 J

10.

What is the kinetic energy formula?

a)

KE = mass x speed

b)

KE = 1/2 x mass x speed

c)

KE = 1/2 x mass x speed2

d)

KE = distance / time

11.

Is there more kinetic energy when a roller coaster is at the top of a hill or when it has reached the bottom of the hill?

a)

Top of the hill

b)

Bottom of the hill

c)

Same kinetic energy at both points

d)

This is not an example of kinetic energy

12.
As the velocity of an object decreases its KE will...
a)
increase
b)
decrease
c)
stay the same
13.
What force is constantly acting on Earth?
a)
kinetic energy
b)
mechanical force
c)
potential energy
d)
gravity
14.

A roller coaster has a mass of 250 kg, and is 50 meters above the ground, what is the potential energy?

a)

122,625 J

b)

5,600 J

c)

234,799 J

15.

A weight lifter lifts a set of 1250kg weights a vertical distance of 2m in a weight lifting contest. What is the potential energy of the weights after being lifted?

a)

12,789 J

b)

24,525 J

c)

4,500 J

16.

Work is done when

a)

the displacement is not zero.

b)

the displacement is zero.

c)

the force is zero.

d)

the force and displacement are perpendicular.

17.

An acorn falls from a tree. Compare its kinetic energy KE to its gravitational potential energy PE as it falls.

a)

KE increases and PE decreases

b)

KE decreases and PE decreases

c)

KE increases and PE increases

d)

KE decreases and PE increases

e)

cannot be determined

18.

If you push twice as hard against a stationary brick wall, the amount of work you do:

a)

quadruples

b)

doubles

c)

is cut in hald

d)

remains constant but nonzero

e)

remains constant at zero

19.
_______ is force applied through a distance.
a)
Effort
b)
Resistance
c)
Power
d)
Work
20.
A watt is equal to _______.
a)
one newton-meter
b)
one meter per second
c)
one newton per second
d)
one joule per second
21.

In a physics lab, a 70 kg student runs up a 4.0 meter tall fight of stairs in 3.5 seconds. How much power was required?

a)

2785 W

b)

784.8 W

c)

980 W

d)

78.4 W

22.

Work is done when

a)

there is no displacement

b)

there is no force

c)

displacement is not zero

d)

force and displacement are perpendicular

23.

What happens to an object's kinetic energy when friction is the only force acting on the object in motion?

a)

kinetic energy increases

b)

kinetic energy decreases

c)

kinetic energy remains constant

d)

kinetic energy fluctuates

24.

What is the unit of measurement for spring constant (k)?

a)

Newton

b)

N x m

c)

Watt

d)

N/m

25.

Which is NOT acceptable units of power?

a)

J/s

b)

hp

c)

J

d)

W

26.

Energy stored in a stretched/compressed object is

a)

kinetic energy

b)

mechanical energy

c)

total energy

d)

elastic potential energy

27.
At which point(s) on the roller coaster is the gravitational potential energy at its maximum?
a)
A
b)
B
c)
C
d)
D
28.
At which point(s) on the roller coaster is the kinetic energy at its maximum?
a)
A
b)
B
c)
C
d)
D
29.

This equation represents potential energy

a)

Vf=V0+at

b)

mgh

c)

0.5 m v2

d)

0.5 k x2

30.

This equation represent kinetic energy

a)

Vf=V0+at

b)

mgh

c)

(1/2) m v2

d)

(1/2) k x2

31.

This equation represents potential elastic energy

a)

Vf=V0+at

b)

mgh

c)

(1/2) m v2

d)

(1/2) k x2

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