Phy 102 Exam 2 Question and Answers verified solution 2022

The SI units of work are - Joules An elevator lifts a person from the 1st floor to the 4th floor in 30s. If the power output of the elevator is 5800W, what is the work done by the elevator - 174,000 J A 75 kg man climbs the stairs to the fifth floor of a building, a total height of 16 m. His potential energy has increased by approximately - 12000 J A ball rolling down an incline has its maximum kinetic energy at - the bottom The power required to exert 64N of force over a distance of 8m in 32 seconds is - 16 W A diver who weighs 500 N steps off a diving board that is 10 m above the water. The diver hits the water with kinetic energy of - 5000 J A light aluminum ball and a heavy lead ball of the same size are allowed to roll down an incline. When they are halfway down the incline, they will have identical - none of above A person drops one rock from rest and it falls 100 meters down a cliff before hitting the ground. The person then throws an identical rock downward. The amount of kinetic energy gained by the rock dropped from rest is ________ that of the second rock, and the change in potential energy of the rock dropped from rest is _________ that of the second rock - equal to, equal to