A bullet of mass m is fired vertically from below into a thin horizontal sheet of plywood of mass M that is initially at rest, supported by a thin sheet of paper. The bullet punches through the plywood, which rises to a height H, above the paper before falling back down. The bullet continues rising to a height h, above the paper. a)Express the upward velocity of the bullet and the plywood immediately after the bullet exits the plywood in terms of h and H. b)What is the speed of the bullet? c)What is the mechanical energy of the system before and after the inelastic collision? Relevant equations: Momentum = M * V Conservation of energy = Ui + Ki = Uf + Kf What should I do first? The bullet makes an inelastic collision first with the plywood so the KE is not conserved and it continues to go past the plywood. For part A: Im not too sure on how to express the upward velocity in terms of h and H, actually Im just confused at the question. For Part B: Im stuck here too... For Part C: Do I do Ui + Ki = Uf + Kf where initial is before the collision and final is after?