Work and Energy Quiz Review #JayPhysics

Potential or kinetic?
Stretched bow and arrow?

• kinetic
• potential

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

• A
• B
• C
• D

At which point(s) on the roller coaster is the kinetic energy at its maximum?

• A
• B
• C
• D

Select all: Work is equal to...

• KE + PE

• Change in energy

• mg

• Fd

What is the difference between calculating power and work?

• Power takes into account the time it takes to complete a task
• Work takes into account the time it takes to complete a task
• Power is force/area
• Work is force/area

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

If an object moves from a high place to a lower place, will it gain or lose potential energy?

• lose
• gain
• neither
• both

Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who did more work?

• Bobby

• Carol

• They did the same amount of work

• Not enough information

A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. Her power is:

• 320 W

• 400 W

• 500 W

• 2 000 W

Groot rescues Rocket from the bottom of a deep pit. Groot expends 1000 J of energy lifting Rocket who has a mass of 50 kg out of the pit. How deep is the pit?

• 0.5 m
• 2 m
• 4 m
• 10 m