Use m, for the mass of the ball, m2 for the mass of the pendulum, vị for the velocity of the ball and v2 for the velocity of the ball and pendulum together. a. For the drawings above, assuming a completely inelastic and instantaneous collision, derive an equation for the momentum of the system, at the instant just before the collision. A completely inelastic collision often refers to a collision where the two objects stick together. b. Derive an equation for the final velocity of ball and bob immediately after collision. Show how you arrived at this. c. Derive an equation for the total mechanical energy of the ball and bob combination immediately after collision

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