Science Flashcards
1
Q
Kinetic energy
A
1/2 x mass x speed*
2
Q
Resultant force
A
Mass x acceleration
3
Q
Momentum
A
Mass x velocity
4
Q
Work done
A
Force x distance moved
5
Q
Power
ET or WD
A
Work done / time
Or
Energy transferred / time
6
Q
Efficiency
A
Useful energy output / total energy input (x100)
Or
Useful power output / total power input (x100)
7
Q
Weight
A
Mass x gravitational field strength
8
Q
Gravitational potential energy
A
Mass x height x gravitational field strength
9
Q
Force applied to a spring
A
Extension x spring constant
10
Q
Distance travelled
A
Speed x time
11
Q
Acceleration
A
Change in velocity / time
12
Q
Wave speed
A
Frequency x wavelength
13
Q
Potential difference
A
Current x resistance
14
Q
Electrical charge
A
Current x time
15
Q
Electrical power
A
Potential difference x current
Or
Current* x resistance
