Review-Work, Power, & Energy

The rate at which work is done is...

• Efficiency
• Power
• Effort
• Energy

The ability to do work is...

• Efficiency
• Power
• Effort
• Energy

Tags

NGSS.HS-PS3-3

The unit for work is...

• Joules
• Newtons
• Kilograms
• Watts

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The unit for power is...

• Joules
• Newtons
• Kilograms
• Watts

The Law of Conservation of Energy states that total energy...

• Never changes but can be transformed from one form to another
• Increases or decreases depending on height
• Slowly decreases until it reaches zero
• Increases over time

Tags

NGSS.HS-PS3-3

If you push against a wall and it doesn't move, then you are not doing work on the wall.

• True
• False

A baseball player throws a ball with a mass of 0.4 kg. What is the gravitational potential energy of the ball when it is 10.0 m above the ground?

• 4J
• 39.2J
• 0.04J
• 10.4J

Tags

NGSS.HS-PS3-1

A 75 kg tiger climbs to the top of a 2.0 M tree. How much GPE does it gain?

• 1470J
• 150J
• 33.5J
• 0.027J

Tags

NGSS.MS-PS3-2

How high do you have to lift a 1 kg ball to give it 75 J of gravitational potential energy (GPE)?

• 75m
• 0.013m
• 735m
• 7.65m

Tags

NGSS.MS-PS3-2

What is the KE of a 15 kg mass at 5 m/s?

• 187.5J
• 75J
• 37.5J
• 3J