Topic 4: Energy Flashcards
1
Q
How do you calculate work?
A
Work = force x distance
2
Q
How do you calculate gravitational potential energy?
A
Gravitational potential energy = mass x gravitational field strength x height
3
Q
How do you calculate kinetic energy?
A
Kinetic energy = 1/2 x mass x speed ^2
4
Q
How do you calculate power?
A
Power= work done / time taken
5
Q
How do you calculate efficiency?
A
Efficiency = useful energy output / total energy input x 100
