A ball having mass 106 grams moving hits a hanging block of mass 1.95 kg and sticks in the block. The block is primarily suspending vertically on a 75 cm long piece of string. After the ball hits the block, the block then move to and fro at an angle of 36 degree from the vertical.
i) Determine the initial velocity of the ball?
ii) Determine how much mechanical energy was lost throughout the collision.