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Flashcards in Formula Deck (22):
1

Distance travelled

Distance travelled = average speed x time

2

Acceleration

Acceleration = change in velocity / time taken

3

Force

Force = mass x acceleration

4

Weight

Weight = mass x gravitational field strength

5

Efficiency

Efficiency = useful energy transferred by the device / total energy supplied to the device

6

Momentum

Momentum = mass x velocity

7

Wave speed (1)

Wave speed = distance / time

8

Wave speed (2)

Wave speed = frequency x wavelength

9

Density

Density = mass / volume

10

Work done

Work done = force x distance moved in direction of force

11

Change in gravitational potential energy

Change in gravitational potential energy = mass x gravitational field strength x change in vertical height

12

Kinetic energy

Kinetic energy = 0.5 x mass x speed(squared)

13

Power

Power = work done / time taken

14

Energy transferred

Energy transferred = charge moved x potential difference

15

Charge

Charge = current x time

16

Potential difference

Potential difference = current x resistance

17

Power (2)

Power = energy transferred/ time taken

18

Electrical power (1)

Electrical power = current x potential difference

19

Electrical power (2)

Electrical power = current(squared) x resistance

20

Force exerted from a spring

Force exerted from a spring = spring constant x extension

21

Moment of force

Moment of force = force x distance normal to the direction of the force

22

Pressure

Pressure = force normal to surface / area of that surface