Physics Equations Flashcards
1
Q
- Weight = mass x gravitational field strength
A
W = m g
2
Q
- Work done = force x distance (along the line of action of the force)
A
W = F s
3
Q
- Force applied to a spring = spring constant x extension
A
F = k e
4
Q
- Distance travelled = speed x time
A
S = v t
5
Q
- Acceleration = change in velocity / time taken
A
A = v/t
6
Q
- Resultant force = force x acceleration
A
F = m a
7
Q
- Momentum = mass x velocity
A
P = m v
8
Q
- Kinetic energy = 0.5 x mass x (speed)2
A
Ek= 1/2m v2
9
Q
- Gravitational potential energy = mass x gravitational field strength (g) x height
A
Ep = m g h
10
Q
- Power = energy transferred/time
A
P = e/t
11
Q
- Power = work done / time
A
P = W/ t
12
Q
- Efficiency = useful output energy transfer / total input energy transfer
A
n/a
13
Q
- Efficiency = useful power output / total power input
A
n/a
14
Q
- Wave speed = frequency x wavelength
A
V = f Y
15
Q
- Charge flow = current x time
A
Q = I t
