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stupif
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1. a free falling skydiver reaches a terminal velocity of 65m/s before opening his parachute.the parachute can provide a deceleration of 30m/[s[2]. a parchutist cannot hit the ground at a speed greater than 5m/s without risking injury. what is the minimum height at which the skydiver can open his parachute?
2. anyone can gives me some guidelines to do this question. because i don't understand what the question talking about. i don't know where i should start.
2. anyone can gives me some guidelines to do this question. because i don't understand what the question talking about. i don't know where i should start.