A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 2.0 m/s, skates by with the puck. After 2.40 s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 0.50 m/s, determine each of the following. (a) How long does it take him to catch his opponent? (Assume the player with the puck remains in motion at constant speed. ) S (b) How far has he traveled in that time? mA small mailbag is released from a helicopter that is descending steadily at 2.08 m/s. (a) After 5.00 5, what is the speed of the mailbag? WE (b) How far is it below the helicopter? (c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 2.08 m/s? WEI A model rocket is launched straight upward with an initial speed of 57.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 100 m. (a) What can you say about the motion of the rocket after its engines stop? This answer has not been graded yet. (b) What is the maximum height reached by the rocket? lTl (c) How long after liftoff does the rocket reach its maximum height? 5 (d) How long is the rocket in the air? S