Work and power

Which of the following is a true statement about work?

• It measures how quickly an object accelerates 
• It measures how much effort is applied over a certain distance
• It measures the change in an object's rate of speed
• It measures how much time it takes to move a massive object

A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 

• 77 J
• 7.7 J 
• 0.7 J 
• 770 J 

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NGSS.HS-PS3-2

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?

• 600 J 
• 660 J
• 900 J 
• 1200 J 

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NGSS.HS-PS3-1

How much work is being done with 200 N of force over 426 meters?

• 85,200 J
• 45,620 J
• 90,480 J
• 62,329 J

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NGSS.HS-PS3-1

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N
• 15 N
• 1.5 N
• 150 N

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NGSS.HS-PS2-1

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?

• 3.8 m
• 3.7 m
• 3.2 m
• 3.6 m

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

units for work are

• netwons
• joules
• meters
• seconds

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NGSS.MS-PS3-4

work transfers

• sweat
• energy
• velocity
• effort

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS3-4

if you push a cart with a force of 60 N for 2 m... how much work have you done

• 120 J
• 30 J
• 120 N 
• 30 N

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed