# Physics equations

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weight
weight=mass x gravitational field strength
1 of 23
work done
work done= force x distance(along the line of action of the force)
2 of 23
force applied to a spring
force applied to a spring=spring constant x extension
3 of 23
moment of a force
moment of a force=force x distance(normal to direction of force)
4 of 23
pressure
pressure=force normal to a surface/area of that surface
5 of 23
distance travelled
distance travelled=speed x time
6 of 23
acceleration
acceleration= change in velocity/ time taken
7 of 23
resultant force
resultant force=mass x acceleration
8 of 23
momentum
momentum= mass x velocity
9 of 23
kinetic energy
kinetic energy= 0.5 x mass x (speed^2)
10 of 23
gravitational potential energy
gravitational potential energy = mass x gravitational field strength x height
11 of 23
power (energy)
power= energy transferred/ time
12 of 23
power
power= work done/time
13 of 23
efficiency (energy transfers)
efficiency= useful output energy transfer/ total input energy transfer
14 of 23
efficiency (power)
efficiency= useful power output/ total power input
15 of 23
wave speed
wave speed= frequency x wavelength
16 of 23
charge flow
charge flow= current x time
17 of 23
potential difference
potential difference= current x resistance
18 of 23
power (potential dif.)
power= potential difference x current
19 of 23
power (current)
power= (current^2) x resistance
20 of 23
energy transferred (power)
energy transferred= power x time
21 of 23
energy transferred (potential dif.)
energy transferred= charge flow x potential difference
22 of 23
density
density= mass/vloume
23 of 23

## Other cards in this set

### Card 2

work done

#### Back

work done= force x distance(along the line of action of the force)

### Card 3

#### Front

force applied to a spring

### Card 4

#### Front

moment of a force

pressure