Equations Flashcards
1
Q
Weight
A
= mass x gravity field strength
2
Q
Work done
A
= force x distance
3
Q
Force applied to string
A
= spring constant x extension
4
Q
Distance
A
= speed x time
5
Q
Acceleration
A
= change in velocity/ time taken
6
Q
Resultant force
A
= mass x acceleration
7
Q
Momentum
A
= mass x velocity
8
Q
Kinetic energy
A
= 0.5 x mass x speed squared
9
Q
Gravitational potential energy
A
= mass x gravity x height
10
Q
Power
A
= energy transferred/ time
Or
= work done/ time
11
Q
Efficiency
A
Useful power output/ total power input
Or
Useful output energy transfer/ total input energy transfer
12
Q
Wave speed
A
= frequency x wavelength
13
Q
Charge flow
A
= current x time
14
Q
Pd
A
= current x resistance
15
Q
Power
A
= pd x current
