> relative to a person at rest in the basket. that person sees the stone hit the ground 5.00 s after it was thrown. assume that the balloon continues its downward descent with the same constant speed of 20.0 m> s. (a) how high is the balloon when the rock is thrown? (b) how high is the balloon when the rock hits the ground? (c) at the instant the rock hits the ground, how far is it from the basket? (d) just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer (i) at rest in the basket and (ii) at rest on the ground.
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