Question

How much power is needed to lift a book to a height of 2.0 meters in a time of 1.0 second, if the book exerts a force of 20 Newtons?

Answer 1

Answer: P = 40 W

Explanation: Power is defined as the amount of work per unit time or expressed in the formula of P = W /t

Work is the product of force and distance so W = Fd.

So the working equation will be:

P = Fd / t

= 20 N ( 2.0 m) / 1 s

= 40 W

Is the amount of power exerted.