Equations Flashcards
1
Q
Distance travelled
A
speed x time
2
Q
Acceleration
A
change in velocity / time taken
3
Q
Resultant force
A
mass x acceleration
4
Q
Work done
A
force x distance
5
Q
Momentum
A
mass x velocity
6
Q
Stopping distance
A
thinking distance + braking distance
7
Q
Wave speed
A
frequency x wave length
8
Q
Kinetic energy
A
0.5 x mass x (speed)2
9
Q
Gravitational potential energy
A
mass x gravitational field strength x height
10
Q
Power (energy transfer)
A
Energy transferred / time
11
Q
Power (work done)
A
work done / time
12
Q
Efficiency (energy transfer)
A
useful output energy transfer / total input energy transfer
13
Q
Efficiency (power)
A
useful power output / total power input
14
Q
Charge flow
A
current x time
15
Q
Potential difference
A
current x resistance
