Power (Also seen in GCSE Physics 1 and AS Unit 1)

Power is a measure of how quickly something can transfer energy. Power is linked to energy by the equation:

Power is measured in Watts, W

Energy is measured in Joules, J

Time is measured in seconds, s

But Work Done = Energy Transferred so we can say that power is a measure of how quickly work can be done.

Now that we can calculate Work Done we can derive another equation for calculating power:

We can substitute into to become this can be separated into .

so we can write

Velocity is measured in metres per second, m/s or ms^-1