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WorksheetsEnergy Unit Review
Total questions: 20
Worksheet time: 12mins
If all of the following objects are moving at the same velocity, what is the correct order for them from least kinetic energy at the top to most kinetic energy on the bottom?
1 - Bowling Ball
2 - Wrecking Ball
3 - Ping Pong Ball
4 - Cotton ball
5 - Baseball
4,3,5,1,2
2,1,5,3,4
3,4,1,5,2
4,3,2,5,1
If a girl holds a ball at waist level and then lifts the ball above her head and holds it there, which of the following is she doing?
increasing the ball's kinetic energy
increasing the ball's stored energy
decreasing the ball's potential energy
decreasing the ball's magnetic energy
Look at the picture of a ball bouncing. Which of the following best illustrates that energy has been transferred to the ball?
the ball dropping
the ball bouncing up again
the ball compacting as it hits the ground
the ball being held before being dropped
If you were shooting a bow and arrow, which of the following steps would produce the most elastic energy? HINT: There are two answers!
bending the bow
aiming the arrow
loading the arrow
pulling the string back
releasing the arrow
What is the correct label for the position with the rectangular box on the track shown below?
Maximum Kinetic Energy
Minimum Kinetic Energy
Maximum Potential Energy
Minimum Potential Energy
Each figure below shows a force measured in Newtons pushing on a block. If there are no other forces pushing on the block, in which case is the acceleration of the block the greatest?
A
B
C
D
An archer loads an arrow into his bow, pulls the string and shoots at a target. When does the arrow have the most elastic potential energy?
elastic potential energy remains constant
a fraction of a second after he releases the string and the arrow starts moving
before he pulls the string back
when the string is pulled all the way back
just before the arrow hits the target
Mack the mountain man is an avid outdoorsman. What would be the correct ranking for Mack's gravitational potential energy from lowest to highest with the lowest amount on top? All of the activities occur on the same mountain.
1 - Playing banjo while dancing 500 meters from the mountain's base
2 - Napping at the very top of the mountain
3 - Chopping wood 200 meters above the mountain's base
4 - Driving horses at the bottom of the mountain
5 - climbing up a cliff 50 meters above the mountain's base
4, 5, 3, 1, 2
5,4,1,2,3
2,1,3,5,4
2,3,4,1,5
What are some things that can give or take away the kinetic energy of a sailboat? Select all that apply.
Wind
Water Currents
Making a hard turn
Collision with another boat
Wearing stylish sunglasses
Which of the following graphs could represent the gravitational potential energy on the y-axis vs. the altitude (this means height) on the x-axis of a gondola as it travels up a mountain?
A
B
C
D
The kinetic energy and potential energy of the cannonball is constantly ____________ as it travels through the air.
increasing
changing
decreasing
constant
Two magnets are stuck together when a student pulls them apart and holds them close to each other so she can still feel them pulling on each other. How does pulling the magnets apart affect their magnetic potential energy?
stays the same
decreases by one half
magnets cannot create potential energy
magnets only have potential energy when they are touching each other
increases
Twins of identical mass decide to go for a run. One of them runs at 10 m/s and the other runs at 10 mph (miles per hour). Select all of the true statements.
The twin running at 10 m/s has more kinetic energy
The twin running at 10 mph has more kinetic energy
Both twins have the same kinetic energy
Meters per second and miles per hour are equivalent units for velocity
Meters per second and miles per hour are not equivalent units for velocity
Select all statements that are true about the cannonball soaring through the air in the picture below. The apex is the highest point of the cannonball's flight. Ignore the effects of air resistance.
The total energy of the cannonball remains constant as it travels through the air.
The kinetic energy of the cannonball decreases until it reaches the apex.
Potential energy is converted to kinetic energy once the cannonball goes past its apex.
Potential energy remains constant as the cannonball flies through the air.
Total energy is only constant at the apex.
Just after the rocket's engine is lit, a surge of kinetic energy is transferred to it that sends it skywards. Where was the kinetic energy transferred to the rocket from?
Chemical potential energy of the rocket fuel
gravitational potential energy
spring mechanism in the launch platform
electromagnetic potential energy
Brenda rolls a 12 pound bowling ball at 8 meters per second on her first roll and then rolls the same ball at 4 meters per second on her second roll. How much did the kinetic energy of the ball change from the first to the second roll? Ignore the effects of rotational kinetic energy.
Decreases to 1/9th
decreases to 1/2
decreases to 1/27th
decreases to 1/4th
Which of the following could represent a graph of kinetic energy on the y-axis vs velocity on x-axis?
A
B
C
D
A greyhound is walking along with a kinetic energy of 100 Joules at a constant velocity when it sees a rabbit and sprints after it. If the greyhound is sprinting at a constant velocity that is five times greater than its walking speed, how much kinetic energy does the greyhound have?
200 Joules
500 Joules
900 Joules
2,500 Joules
more kinetic energy than it did when it was walking
A long distance runner runs three laps at 5mph and in a desperate attempt to win she runs the last lap at 10 mph. How much does this velocity increase change her kinetic energy?
doubles it
quadruples it
makes it 9 times larger
makes if 27 times larger
does not change it
A student pushes two strong button magnets against each other so that the positive ends are in firm contact with each other. Right after the student releases the magnets, which of the following will happen? Select all correct statements.
The magnets will stay in firm contact with each other.
The magnets will move away from each other.
The magnetic potential energy between the magnets will decrease.
The magnetic potential energy between the magnets will increase.
The kinetic energy of the magnets will increase.
