Homework Help: Physics :)

Posted by Kate on Saturday, June 2, 2012 at 11:59am.

A motor lifts a 70.0 kg box off the ground, starting from rest. In 8.00 seconds it lifts the box to a height of 20.0 m. At that time, the box is moving upward with a velocity of 5.00 m/s. What is the average power of the motor during this time interval?

Physics :) - Elena, Saturday, June 2, 2012 at 12:25pm
P =W/t = ΔE/t = (m•g•h +m•v²/2)/t
Physics :) - aladesote T J, Monday, November 5, 2012 at 2:32pm
1820w

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