Work, Power and Energy

In order to do work, energy is

• lost

• transferred or converted

• used up

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NGSS.MS-PS3-5

When a body Falls freely then the...

• Its potential energy is converted into kinetic energy.

• Its mechanical energy is converted into heat energy

• Its kinetic energy is converted into potential energy

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NGSS.MS-PS3-5

A compressed spring possesses

• Elastic Potential Energy

• Gravitational Potential Energy

• Kinetic Energy

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NGSS.MS-PS3-2

When an object is raised to a certain height above ground, it possesses

• Kinetic energy

• Elastic Potential Energy

• Gravitational Potential Energy

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NGSS.MS-PS3-2

The SI unit of work is –

• Newton

• Joules

• Pascal

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The sum of kinetic and potential energy is –

• Mechanical Energy

• Light energy

• Heat Energy

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NGSS.MS-PS3-4

Watt is the SI unit of –

• Power

• Force

• Work

A 12kg fox runs after a rabbit with a speed of 3m/s. What is the Kinetic energy of the fox?

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NGSS.MS-PS3-1

How much work was produced from a box being pushed with a force of 50N a distance of 2m?

How much power is generated from 75 J worth of work if it took 5 seconds.