Work and Power

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 

Tags

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 

Tags

NGSS.MS-PS2-4

Which of these is a measure of force?

• 100 newtons
• 100 meters per second
• 100 joules
• 100 watts

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

You do 90 joules of work in 30 seconds. How much power have you generated?

• 30 watts
• 3 watts
• 120 watts
• 270 watts

Work divided by time equals...

• energy
• power

The unit of work is the ...

• joule
• force

Tags

NGSS.HS-PS3-2

The unit of power is the...

• work
• watt

Force multiplied by distance equals...

• work
• power

Work is done on an object when the object moves in the SAME direction in which the force is applied.

• True
• False

The FARTHER you move an object, the more work you do.

• True
• False