Jill can use a force of 12.0 n to lift a single box up 5.00 m. how many of these boxes must she lift it in a minute to use 60.0 w of power?

60 boxes

Explanation:

The work done by lifting a single box is equal to the force applied (the weight of the box) times the displacement of the box:

Power is related to the work done by the equation:

where W is the work done and t is the time. In this problem, we are told that the power used is P=60.0 W, while the time taken is t = 1 min = 60 s, so the total work done must be

Therefore, the number of boxes that she has to lift in order to use this power is the total work divided by the work done in lifting each box:

yup its correct its: c) b b

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s