Forces and Energy Flashcards

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1
Q

When a force causes an object to move through a distance…

A

Work is done

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2
Q

Units of force applied?

A

N

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3
Q

Units of work done?

A

J

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4
Q

Units of distance moved in the direction of the force?

A

m

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5
Q

What’s transferred when work is done?

A

Energy

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6
Q

Units of power?

A

W (watts)

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7
Q

What is power?

A

The work done or energy transferred in a given time

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8
Q

Units of energy transferred?

A

J

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9
Q

Units of time taken?

A

s

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10
Q

What’s gravitational potential energy?

A

Energy that an object has by virtue of it’s position in a gravitational field

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11
Q

Units of gravitational potential energy?

A

J

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12
Q

Units of mass?

A

Kg

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13
Q

Units of change in height?

A

m

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14
Q

Units of gravitational field strength?

A

N/Kg

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15
Q

In terms of gravitational potential energy, what happens when an object is lifted vertically?

A

Work is done against gravitational force and the object gains gravitational potential energy

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16
Q

What does the kinetic energy of an object depend on?

A

Its mass

Its speed

17
Q

Units of kinetic energy?

A

J

18
Q

Units of speed?

A

m/s