Year 3 Flashcards
1
Q
Formula for Density
A
Density = mass/volume
2
Q
Formula for weight
A
W=mg (g = 9.81)
3
Q
Formula for Speed
A
S=Distance/time
4
Q
Formula for Acceleration
A
a=(v-u)/t
5
Q
Formula for Force
A
F = ma
6
Q
Hooke’s Law
A
W oc e
W = ke
k = W/e (where k is the spring constant)
7
Q
Formula for momentum
A
p = mv (unit: kgms-1)
8
Q
Formula for Impulse
A
I=F x t
= m(v-u)
9
Q
Formula for Moment
A
Force x Perpendicular Distance
10
Q
Formula for pressure
A
P=F/A
11
Q
Formula for energy
A
Force x Parallel Distance
12
Q
Formula for Kinetic Energy
A
1/2 mv^2
13
Q
Formula for Potential Energy
A
E = mgh
14
Q
Efficiency
A
work done/energy input
15
Q
Power
A
Energy/time
