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