Work & Power

1. A book weighing 1.0 newton is lifted 2 meters.  How much work was done?

• 2 J
• 0.5 J

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-2

A force of 15 newtons is used to push a box along the floor a distance of 3 meters.  How much work was done?

• 3 J
• 45 J

Tags

NGSS.HS-PS3-1

It took 50 joules to push a chair 5 meters across the floor. With what force wast the chair pushed?

• 250N
• 10N

Tags

NGSS.HS-PS2-1

A force of 100 newtons was necessary to lift a rock.  A total of 150 joules of work was done.  How far was the rock lifted?

• 1.5m
• 15,000 m

It took 500 newtons of force to push a car 4 meters.  How much work was done?

• 2,000 J
• 125 J

Tags

NGSS.MS-PS3-5

A young man exerted a force of 9,000 newtons on a stalled car but was unable to move it.  How much work was done?

• 9,000 J
• 0 J= No work

A set of pulleys is used to lift a piano weighing 1,000 newtons.  The piano lifted 3 meters in 60 seconds  How much power is used?

• 16.67 watts
• 50 watts

How much power is used if a force of 35 newtons is used to push a box a distance of 10 meters in 5 seconds?

• 70 watts
• 1750 watts

What is the power of a kitchen blender if it can perform 3,750 joules of work in 15 seconds?

• 56, 250 watts
• 250 watts

Tags

NGSS.HS-PS3-1

How much work is done using a 500 watt microwave oven for 5 minutes?

• 150,000 J
• 2500 J