A 0.01 kg Styrofoam ball is released from rest 2m above the floor. It reaches a speed of 3m/s the moment before it hits the floor. How much heat due to air resistance is generated during this process?

Answer 1

fall from 2 meters
potential energy loss = m g h =.01 *9.81*2
= .1962 Joules
kinetic energy gain = (1/2)mv^2 =.005(9)
=.045 Joules

difference is lost to heat
.1962 - .045 = .151 Joules