Question

A science student holds a 55g egg out a window. Just before the student release the egg the egg has 8.0 j of gravitational potential energy with respect to the ground. How high is the students arm above the ground in meters

Answer 1

The gravitational potential energy is calculated by the product of mass of the object, gravitational acceleration and the height or the elevation of the object. We calculate as follows:

PE = mgh
8.0 J = .055 kg (9.81 m/s^2) (h)
h = 14.83 m

Hope this helps.