Font size
WorksheetsPHet Skatepark Simulation Physics 11
Total questions: 40
Worksheet time: 29mins
What are the units for energy?
Watts
Joules
Newtons
meters
Select all of the objects that have kinetic energy. (You may click more than one object!)
When does an object have NO kinetic energy?
When it's at rest.
When it's moving very slowly.
When it has no electrical charge.
Gravitational potential energy is defined as
the energy an object has due to its height above the ground
the energy an object has due to its motion
the energy a spring has due to its stretch
the chemical energy stored in the molecules of atoms
Which of the following is the correct equation for calculating an object's gravitational potential energy?
PE = mgh
PE = mg / h
PE = mg + h
PE = gh
What does the Law of Conservation of Energy state?
Energy cannot be created or destroyed
Nothing can exchange energy
Energy will increase over time.
Energy will decrease over time.
Energy can be _____________ or changed from one type to another.
destroyed
transferred
created
ignored
When we increased the mass of the skater, how was the total/overall energy affected?
Total energy increased
Total energy decreased
Kinetic energy increased ONLY
Potential energy increased ONLY
How does the skater's kinetic energy change as he moves down the ramp?
Increases
Decreases
Remains the same
How does the skater's kinetic energy change as he moves up the ramp?
Increases
Decreases
Remains the same
How does the skater's gravitational potential energy change as he moves up the ramp?
Increases
Decreases
Remains the same
How does the skater's gravitational potential energy change as he moves down the ramp?
Increases
Decreases
Remains the same
How does the skater's total energy change as he moves down the ramp?
Increases
Decreases
Remains the same
How does the skater's total energy change as he moves up the ramp?
Increases
Decreases
Remains the same
At the bottom of the ramp, the skater has _______ kinetic energy than at the top of the ramp.
More
Less
The same
At the bottom of the ramp, the skater has _______ potential energy than at the top of the ramp.
More
Less
The same
At the bottom of the ramp, the skater has _______ total energy than at the top of the ramp.
More
Less
The same
What happens when the skater is dropped onto the ramp from a spot higher than the top of the ramp (so at the edge of the track but vertically higher)? Why do you think this happens?
The skater has more speed but stays on the track.
The skater has more thermal energy due to friction but stays on the track.
The skater flies off the track, because they had more gravitational potential energy than previous, meaning more total energy as well.
The skater flies off the track because there isn't enough friction.
What happens when the skater is dropped into the middle of the ramp (you can try this both higher and not as high as the track but in the middle)? Why?
He stops because he gets hurt.
He stops because the gravitational potential energy is transferred into thermal energy.
He stops because there is thermal energy.
He stops because there is not enough total energy.
What point on this track would have the most gravitational potential energy?
A
B
C
D
E
What point on this track would have the most kinetic energy?
A
B
C
D
E
What points would have the same kinetic energy?
A and B
C and D
A and D
B and D
What is the skater's speed (even though the speedometer isn't pictured)?
0
Unknown
Above 0
The faster an object moves, the ________ kinetic energy it has.
more
less
When energy is converted, what happens to the total amount of energy in the system?
Increases
Decreases
Stays the same
Goes to zero
Based on the information provided, could the skater gain more speed?
No, because he has reached his maximum KE
Yes, because he has not reached his maximum KE
No, because he has not reached his maximum PE
Yes, because he has reached his maximum PE
Mass _______ the total amount of energy.
Affects
Does not affect
When does the ball have the greatest PE?
1
2
3
4
(No friction on the track)
(No friction on the track)
As an object falls, kinetic energy...
Increases
Decreases
Remains the same
As an object falls, its total energy...
Increases
Decreases
Remains the same
As an object speeds up horizontally, its gravitational potential energy...
Increases
Decreases
Stays the same
