P2.4.2 Curent , Change And Power Flashcards
1
Q
Power is the rate of doing work - i.e how much per second
P= work done/
Time taken
Power is measured in watts (or j/s)
A
Calculating your power output
a) the timed run upstairs
b) the times acceleration
2
Q
Gravitational potential energy is due to height
A
Gravitational potential energy=
Mass X g X height