If a nickel is dropped from a building and no air resistance is present,how does the energy of the nickel change?
potential energy + kinetic energy = constant
at top, Pe = m g H and Ke = 0
on the way down
(1/2) m v^2 + m g h = that original m g H
at top, Pe = m g H and Ke = 0
on the way down
(1/2) m v^2 + m g h = that original m g H