Equations Flashcards
1
Q
Weight
A
Weight=Mass x gravitational field strength
2
Q
Work done
A
= Force x distance
3
Q
Force applied to a string
A
= spring constant x extension
4
Q
Distance travelled
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
9
Q
gravitational potential energy
A
= mass x gravitational field strength (g) x height
10
Q
Power
A
= work done/time
11
Q
Power
A
Energy transferred/time
12
Q
efficiency
A
useful output energy transfer/
total input energy transfer
13
Q
efficiency
A
useful power output/
total power input
14
Q
wave speed
A
= frequency x wavelength
15
Q
charge flow
A
Current x time
