Work, Power, & Energy

Which of these has the most potential energy.

• A

• B

• C

• D

Tags

NGSS.MS-PS3-2

Choose ALL examples of Kinetic energy:

• A car traveling at 45 mph

• A rock on the ledge 5m high.

• A car parked on a lot

• A ball is thrown into the air

• A ball rolling on the ground.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which simple machine would be the MOST efficient for lifting an object 30 meters off the ground?

• pulley

• screw

• wedge

• lever

Tags

NGSS.MS-ETS1-2

_____ is said to be done when force moves an object.

• work

• energy

• motion

Tags

NGSS.MS-PS3-5

Where does the pendulum have the greatest kinetic energy?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Where does the pendulum have the least amount of potential energy?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS3-2

What is the mechanical energy of the system? (ignore friction)

• 0J

• 10,000J

• 20,000J

• can not be determined

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The ability or capacity to do work is called _____.

• energy

• force

• work

Tags

NGSS.MS-PS3-5

Work is done when a force causes an object to ...

• move

• stay still

• slow down

In which scenario is work = 0 J ?

• Pushing a stationary wall

• Pulling a trolley car

• Pushing a book across the table

• Dropping a set of keys from a height, h.