A test capsule of mass 200 kg moves down a vertical shaft. Its speed at the start of the descent is 5.0 m/s. It descends through a vertical height of 7.2 m. Assume that no energy is dissipated during the descent. Gravitational field strength, g=10 N/kgg=10\ \text{N/kg}g=10 N/kg. Calculate the speed of the capsule at the bottom of the shaft.