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- 1. Multiple Choice
An energy bar chart is posted above. Which of the following scenarios could represent the cart?
A car driving up at hill at constant velocity
A skydiver falling to the ground at constant velocity after opening their parachute
A ball rolling down a ramp
A car applying their brakes on a level surface and coming to a stop
- 2. Multiple Choice
A person holds a yo-yo above the ground before letting go. What type of energy is present before the person lets go?
Gravitational Potential Energy
Elastic Potential Energy
Kinetic Energy
Thermal Energy
- 3. Multiple Choice
A box slides at a constant velocity across a frictionless floor. What type of energy is present?
Gravitational Potential Energy
Elastic Potential Energy
Kinetic Energy
Thermal Energy
- 4. Multiple Choice
An object is traveling at a set speed. How will the Kinetic Energy change if that speed is doubled?
It will double
It will quadruple
It will change by a factor of 1/2
It will change by a factor of 1/4
- 5. Multiple Choice
A man pushes a boulder and the boulder does not move. Which statement correctly describes the scenario
work is being done by a single object
All work done is external to the system
by pushing on the rock, the man causes a transfer of energy
no work is being done on the object
- 6. Multiple Choice
Which two measurements must be parallel for work to be done
force and displacement
distance and direction
constant force and power
power and work
- 7. Multiple Choice
A man carries a box across a room at constant velocity. Is work being done on the box by the man?
Yes
No
Half of the time
Not enough information
- 8. Multiple Choice
A man lifts a box into the air. Is work being done by gravity when the box is lifted into the air?
Yes
No
Half of the time
Not enough information
- 9. Multiple Choice
A box slides to a stop across a floor. Describe how the Mechanical Energy changes for the box-Earth system.
It increases
It decreases
It remains constant
The box explodes
- 10. Multiple Choice
A man lifts a weight above his head at constant velocity. Describe the mechanical energy of the weight-earth system.
Mechanical Energy Increases
Mechanical Energy Decreases
Mechanical Energy stays the same
Mechanical Energy is a figment of the imagination
- 11. Multiple ChoiceAt which point(s) on the roller coaster is the gravitational potential energy at its maximum?ABCD
- 12. Multiple ChoiceAt which point(s) on the roller coaster is the kinetic energy at its maximum?ABCD
- 13. Multiple Choice
What does the Law of Conservation of Mechanical Energy state?
Mechanical Energy cannot be created or destroyed for an isolated system
The Mechanical Energy of a system will always remain the same
Energy will increase over time.
Energy will decrease over time.
- 14. Multiple Choice
Describe the mechanical energy of the rollercoaster-Earth system as it travels from a to b. Assume the track is frictionless
The total mechanical energy will remain the same
The external work will cause the mechanical energy to decrease
The external work will cause the mechanical Energy to increase
There is zero Mechanical energy for the coaster system
- 15. Multiple Choice
Based on the graph above would Mechanical Energy be conserved?
Yes, Mechanical Energy is always conserved
No, there is external work acting on the system
No, Mechanical Energy increases
Yes, the left side is equal to the right side
- 16. Multiple Choice
A ball falls to the ground. Is the work done by the force of gravity on the ball-Earth system internal or external?
Internal
External
- 17. Multiple Choice
A box slides to a stop. Is the work done by the force of force of friction on the box-Earth system internal or external?
Internal
External
- 18. Multiple Choice
A ball is dropped from rest and it falls to the ground. Which of the Energy bar charts could represent the Ball-Earth system's energy as it falls
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