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WorksheetsAP Physics - Energy Conservation
Total questions: 25
Worksheet time: 24mins
Name
Class
Date
1.
Kinetic Energy is defined as
a)
Energy stored due to its location
b)
Energy of motion
c)
Energy stored in the bonds of molecules
d)
Heat energy
2.
You drop a 5 kg ball from a height of 2 m. Just before it reaches the ground, what type of energy does it have?
a)
Potential Energy
b)
Kinetic Energy
c)
Nuclear Energy
d)
Chemical Energy
3.
The unit for energy and work is
a)
J
b)
N
c)
m/s
d)
m/s/s
4.
A 5 kg ball is lifted 12 m above the ground. It's gravitational potential energy is
a)
60 J
b)
600 J
c)
17 J
d)
2.4 J
5.
The law of conservation states that
a)
every action has an equal and opposite reaction
b)
all matter has thermal energy
c)
energy cannot be created or destroyed, only changes form
d)
heat moves from an object of higher temperature to an object of lower temperature
6.
The ability to do work is called
a)
energy
b)
thermal
c)
kinetic
d)
potential
7.
Mechanical energy can be either potential or ________.
a)
Motion
b)
Kinetic
c)
Chemical
d)
Light
8.
Which position has the most kinetic energy?
a)
A
b)
G
c)
D
d)
B
9.
Which position has the most potential energy?
a)
A
b)
G
c)
C
d)
D
10.
A pendulum is released from point C. Which statement is correct as it swings from C to A?
a)
The PE increases and KE decreases
b)
The KE increases and PE decreases.
c)
The PE is maximum at A.
d)
The KE is maximum at C and B.
11.
Which of the following is an example of a transformation of potential energy to kinetic energy?
a)
a truck slowing down
b)
a car climbing up a hill
c)
an airplane traveling at constant speed
d)
falling object
12.
How are work and energy related?
a)
The work done by an external force acting on an object causes a change in the mechanical energy of the object.
b)
Work is the same thing as energy. They are equal.
c)
Energy is m*g*h, and work is 1/2*m*v2
13.
A 40 kg crate is picked up by a crane to a height of 50m. The crate falls. What is the velocity of the crate just before it hits the ground?
a)
2000 Joules
b)
19,600 Joules
c)
19,600 m/s
d)
31.3 m/s
14.
When my velocity triples, my kinetic energy increases by ______ times.
a)
9
b)
3
c)
1.5
d)
4.5
15.
When a 65 kg skydiver jumps from a plane, her speed steadily increases until air resistance provides a force that balances the force due to free fall. How fast is the skydiver falling if her kinetic energy at the moment is 704000J?
a)
21661.53 m/s
b)
147.17 m/s
c)
22880.0 km/s
d)
10830.76 m/s
16.
At which point(s) on the roller coaster is the gravitational potential energy at its maximum?
a)
A
b)
B
c)
C
d)
D
17.
At which point(s) on the roller coaster is the kinetic energy at its maximum?
a)
A
b)
B
c)
C
d)
D
18.
In diagram 2, if the mass of the car is 600 kg, what is the change in potential energy from point A to point B?
a)
411,600 J
b)
294,000
c)
176,400 J
d)
117,600 J
19.
In diagram 2, if the 600 kg cart is initially at rest, what is its velocity at point B?
a)
19.8 m/s
b)
15.0 m/s
c)
10.3 m/s
d)
3.8 m/s
20.
1. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. If the ball has a mass of 3.2 kg, what is its height above the ground?
a)
0.26 m
b)
0.52 m
c)
5.2 m
d)
25 m
21.
What is mechanical energy?
a)
It is what metal creates when heated.
b)
All potential and kinetic energy in a system.
c)
It is motion of all matter.
d)
Energy of momentum.
22.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
23.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
24.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
25.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
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