A fire rescue helicopter with a water bucket is hovering 45m high. It drops their load onto the fire below. Unfortunately, it had collected a fish, weighing 357 g, which now falls to the ground. Assuming the fish starts at rest, find (a) What is the potential energy of the fish before it leaves the bucket? (b) What is the velocity at which it hits the ground? (use conservation of energy with no airresistance) (c) If impact time is three milliseconds, determine the average force on the fish. (hint -impulse)