Formulae - LEARN! Flashcards

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1
Q

Distance travelled

A

Distance travelled = average speed x time

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2
Q

Acceleration

A

Acceleration = change in velocity/time taken

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3
Q

Force

A

Force = mass x acceleration

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4
Q

Weight

A

Weight = mass x gravitational field strength

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5
Q

Momentum

A

Momentum = mass x velocity

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6
Q

Change in GPE

A

Change in GPE = mass x gravitational field strength x change in vertical height

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7
Q

Kinetic energy

A

Kinetic energy = 1/2 x m x v^2

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8
Q

Efficiency

A

Efficiency = useful energy transferred/total energy supplied

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9
Q

Wave speed

A

Wave speed = frequency x wavelength

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10
Q

Speed

A

Speed = distance/time

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11
Q

Work done

A

Work done = force x distance moved in the direction of the force

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12
Q

Energy transferred

A

Energy transferred = charge moved x voltage (p.d)

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13
Q

Charge

A

Charge = current x time

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14
Q

Voltage (p.d)

A

Voltage (p.d) = current x resistance

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15
Q

Power

A

Power = energy transferred or work done/time taken

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16
Q

Electrical power

A

Electrical power = current x voltage (p.d)

17
Q

Electrical power

A

Electrical power = current^2 x resistance