Work Energy Power Review

What is being transferred as you do work?

• Energy

• Heat

• Power

• Gravitational Potential Energy

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NGSS.MS-PS3-5

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

• 272 m

• 17 m

• 4.05 m

• 272 cm 

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What is the energy of position or shape that depends on weight and height, also called stored energy?

• Energy

• Kinetic energy

• Potential energy

• Sound energy

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In order for work to be done, what must be true?

• Force acts in the same direction as the distance traveled.

• Force and distance are in opposite directions.

• Force is greater than distance.

• Distance is greater than force.

What is the total mechanical energy of the object?

• 100J

• 75J

• 50J

• 25J

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NGSS.MS-PS3-1

The roller coaster car has a mass of 500 kg. It is pulled from position 1 to 2 (30 m) by a motor. At the top of the ride the vertical distance top to bottom is 20 m. The motor pulls the car with a 4000 N force. Calculate the work done getting the car to the top of the ride.

• 100 000J

• 120 000J

• 800 000J

• 90 000J

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At which point of this roller coaster is the energy 1/2 kinetic and 1/2 potential?

• A

• B

• C

• D

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NGSS.MS-PS3-1

NGSS.MS-PS3-2

Which of the following is defined as an energy transfer?

• kinetic energy

• work

• potential energy

• chemical energy

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The unit of work is

• watt

• hertz

• joule

• pascal

A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the kinetic energy of the light plastic cart is ________ that of the heavy steel cart.

• greater than

• equal to

• less than

• can't say unless we know how big the force is

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1