Part iGravitational Potential Energy (GPE) = mass x gravitational acceleration constant x heightGPE = 2 x 9.81 x 10 = 196.2JPart iiConservation of energy states that the sum of the GPE and KE at the intial position is equal to the sum of the GPE and KE at the final position.GPE1 + KE1 = GPE2 + KE2(KE = 0.5 x m x v2)As the mass is released from rest the initial velocity is 0, KE1 = 0.As the mass is 0m above the ground in the final position, GPE2 = 0.So, GPE1 = KE2mgh = 0.5mv2196.2 = 0.5(2)(v2)v2 = 196.2v = 14ms-1