A rock of mass m= 1.3 kg is dropped from a height of h = 2.6 m into a pool of water.
A rock of mass m= 1.3 kg is dropped from a height of h = 2.6 m into a pool of water. At a time of t = 1.62 s after striking the surface of the water, the rock's velocity has decreased by 50%. What is the magnitude of the average force the rock experiences, in Newton’s, during the time t?