Energy Flashcards

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0
Q

What is work?

A

A transfer of energy

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1
Q

What is energy?

A

The ability to do work

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2
Q

What 2 things are expressed in Joules?

A

Work and energy

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3
Q

How much is one Joule?

A

The amount of energy required to lift an apple one meter

(1 m=about 3 feet)

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4
Q

What is kinetic energy?

A

The energy of motion

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5
Q

When does a tennis player have kinetic energy?

A

When he is swinging the racket (moving)

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6
Q

Kinetic energy depends on….

A

Mass and speed

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7
Q

When does an object have more kinetic energy?

A

The faster it moves, the more kinetic energy it has

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8
Q

The greater the mass….

A

The more kinetic energy

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9
Q

What is potential energy?

A

the energy an object has because if it’s shape or position

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10
Q

What is mechanical energy?

A

The total energy of motion and position of an object

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11
Q

What are types of mechanical energy?

A

Kinetic and potential energy

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