[mini or release 2 The box slides a distance d = 3.60 m down the incline before It encounters (at position 8) a spring and compresses it an amount XC = 0.300 m (to point C) before coming momentarily to rest. Using energy content, determine the following. (a) the speed (in rn/s) of the box at position 8 VB = m/s (b) the spring constant (in N/m) k = N/m (c) the physical quantity that is constant throughout the process kinetic energy elastic potential energy gravitational potential energy total energy