Define power and describe how to determine power

Explanation:

The power is a measure of the rate at which work is done (or similarly, at which energy is transferred). The standard unit of power is Watt (1W). The power is determined by the change in energy, delta E (number of joules) and delta t, which is the time taken in seconds then,

P= delta E/ delta t.

f=ma newton

f=100x2.5=250n

+15-35=-20

going in opposite directions