Physics Equations Flashcards
1
Q
Distance travelled
A
Average speed × time
2
Q
Acceleration
A
Change in velocity ÷ time taken
a=(v-u)/t
3
Q
Force
A
Mass × acceleration
F=m×a
4
Q
Weight
A
Mass × gravitational field strength
W=m × g
5
Q
Change in gravitational potential energy
A
Mass × gravitational field strength × change in vertical height
^GPE=m × g × ^h
6
Q
Kinetic energy
A
1/2 × mass ×(speed)²
KE= 1/2 × m × v²
7
Q
Efficiency
A
(useful energy transferred by the device) / (total energy supplied to the device)
8
Q
Wave speed
A
frequency × wavelength v=f × /\ or distance/time v=x/t
9
Q
Energy transferred
A
Charge moved × potential difference
E= Q × V
10
Q
Charge
A
Current × time
Q= I × t
11
Q
Potential difference
A
Current × resistance
V= I × R
