Exploring Work and Power in Energy Concepts

What is the definition of work in physics?

• The amount of force applied to an object.

• The time taken to move an object.

• The distance an object moves.

• The transfer of energy that occurs when a force makes an object move.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which unit is used to measure work?

• Newtons

• Watts

• Joules

• Meters

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

What are the two conditions that must be met for work to be done?

• The object must be heavy and a force must be applied.

• The object must move and a force must be applied in any direction.

• The object must move and a force must be applied in the direction of the movement.

• The object must be light and a force must be applied.

In the work equation, what does 'D' stand for?

• Distance

• Density

• Duration

• Diameter

If you move a 75 kg refrigerator 35 meters with a force of 90 Newtons, how much work is done?

• 3,150 Joules

• 3,000 Joules

• 3,500 Joules

• 2,700 Joules

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NGSS.MS-PS2-2

NGSS.MS-PS3-5

What is the equation for power?

• Power = Work x Time

• Power = Force / Distance

• Power = Work / Time

• Power = Force x Distance

What unit is used to measure power?

• Meters

• Watts

• Joules

• Newtons

How is one watt defined?

• One Newton per second

• One Joule per second

• One Meter per second

• One Joule per meter

If it took 150 seconds to move a refrigerator and you did 3,150 Joules of work, how much power was required?

• 20 Watts

• 23 Watts

• 22 Watts

• 21 Watts

What does 'P' represent in the power equation?

• Pressure

• Power

• Potential

• Position