Equations Flashcards
1
Q
Distance travelled
A
Average speed x time
2
Q
Acceleration
A
Change in velocity divided by time taken
3
Q
Force
A
Mass x acceleration
4
Q
Weight
A
Mass x gravitational field strength
5
Q
Change in gravitational potential energy
A
Mass x gravitational field strength x change in vertical height
6
Q
Kinetic energy
A
1/2 x mass x (speed)2
7
Q
Efficiency
A
Useful energy transferred by the device divided by total energy supplied to the device
8
Q
Wave speed
A
Frequency x wave length
9
Q
Density
A
Mass divided by volume
10
Q
Force exerted on a spring
A
Spring constant x extension
11
Q
Pressure
A
Force normal to surface divided by the area of surface
