P2. Work Energy And Power Flashcards
1
Q
How do you calculate work done?
A
Work done = force × distance = change in energy
2
Q
Whats the equation for kinetic energy?
A
KE= 1/2mass × volume2
3
Q
How do u calculate GPE?
A
GPE = mass × gravitational force × change in height
4
Q
How do you calculate power ?
A
Power = energy change / time
5
Q
How do u calculate efficiency?
A
Efficiency = (useful energy output / useful energy input) × 100
Or
Efficiency = (useful power output / power input) × 100
