Work, Energy, and Power Review

What are two things required for work to be done?

• Force

• Distance

• Constant Speed

• Momentum

The units of work are

(a)  

If you exert a 10 N force to lift a box 5 m, how many Joules of work do you do?

(Number only)

(a)  

Tags

NGSS.MS-PS3-4

Check all of the things that can affect power

• Work

• Time

• Velocity

• Force

• Distance

How do you increase power?

• Decrease Force

• Increase Work

• Increase Velocity

• Decrease Time

If you exert 500 N to climb 5 m up a flight of steps in 10 seconds, how many watts of power did you exert?

(number only)

(a)  

Tags

NGSS.MS-PS3-4

Explain conservation of energy: Energy is neither ____ nor ___ only ___

answer like (word; word; word)

(a)  

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

How many Joules of potential energy does a 10 kg bag of potatoes have sitting on a table 2 meters above the ground?

(answer number only)

(a)  

A dropped ball does not rebound to the same height as it was dropped. Where does the energy go?

• Heat

• Sound

• The environment

• It is destroyed by hitting the ground

Tags

NGSS.MS-PS3-5

Two balls, a bowling ball and a baseball, are both traveling with a velocity of 10 m/s. Which ball has the greater kinetic energy?

• The bowling ball

• The baseball

• They have the same

• Neither has kinetic energy

Tags

NGSS.MS-PS3-1