Asked by Ralph

a stuntman runs on a roof and without giving himself a vertical impetus, wants to land on another roof, 2m lower and 5m further horizontally. What is the minimal velocity he needs to run at?

Answers

Answered by tchrwill
In time t, he will drop 2 meters.
Thus, 2 = gt^2/2 = 4.9t^2 making t = .903sec.
Therefore, to travel forward 5 meters in t = .903sec., he must give himself an initial horizontal velocity of V = 5m/.903sec. = 5.533m/s.
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