Science -- Force & Motion Flashcards

1
Q

motion

A

the movement of an object

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2
Q

speed

A

how fast an object is moving in a given distance

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3
Q

energy

A

the ability to do work

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4
Q

kinetic energy

A

energy in motion

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5
Q

potential energy

A

stored energy

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6
Q

force

A

a push or pull on an object

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7
Q

gravity

A

a pulling force on an object

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8
Q

friction

A

a force that slows down or stops objects in motion

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9
Q

A rough surface will create _____ friction than a smooth surface.
more less

A

more

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10
Q

A lighter object creates _____ friction than a heavier object.
more less

A

less

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11
Q

Newton’s First Law

A

an object at rest remains at rest unless acted on by an outside force

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12
Q

Newton’s Second Law

A

an object in motion remains in motion unless acted on by an outside force

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13
Q

Newton’s Third Law

A

every action on an object has an equal and opposite reaction

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14
Q

A ball at the top of a hill has _____ energy.

kinetic potential

A

potential

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15
Q

A ball rolling down a hill has _____ energy.

kinetic potential

A

kinetic

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16
Q

What is the ability to do work?

A

energy

17
Q

What kind of force is gravity?

A

pulling force

18
Q

What is a kind of force that can slow down or stop an object that is in motion?

A

friction

19
Q

What happens to an object in motion….?

A

It remains in motion unless acted on by an outside force. (Newton’s Second Law)

20
Q

Every action on an object has….?

A

an equal and opposite reaction. (Newton’s Third Law)