Equations Flashcards

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1
Q

Distance travelled =

A

Average speed x time

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2
Q

Acceleration =

A

Final velocity - initial velocity
———-
Time

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3
Q

Weight in newton’s =

A

Mass in kg × gravitational field strength

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4
Q

Gravitational potential energy =

A

Mass × gravity × height

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5
Q

Kinetic energy

A

0.5 × mass × velocity²

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6
Q

Momentum in kg =

A

Mass × velocity (m/s)

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7
Q

how is velocity for wavelength calculated

A

Frequency (hz) x wavelength(m)

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8
Q

Efficiency =

A

Useful energy out ÷ total energy in

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9
Q

Resultant force =

A

Mass × acceleration

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10
Q

Stopping distance

A

Thinking distance + braking distance

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11
Q

whatare examples of Energy stores and transfers

A

Kinetic , gravitational, chemical , nuclear

Light , sound , electrical

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12
Q

Golden rule for energy

A

Energy can Not be created or destroyed, only transferred or stored

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13
Q

Renewable

Non Renewable

A

Geothermal , solar , wind , hydroelectric

Coal oil gas nuclear

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14
Q

Wave speed

A

Force x wavelength

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15
Q

Work done

A

Force x time

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16
Q

Power

A

Work done ÷ time

17
Q

Momentum

A

Mass x velocity