An archer fires an arrow straight up into the air with a speed vo = 42 m/s. Neglect air resistance. 1. Find the maximum height h reached by the arrow, in meters. 2. Write an expression for the time the arrow is in the air until it returns to launch height in terms of known quantities.

Question

Daisy Buckley

Physics

30 October, 19:47

An archer fires an arrow straight up into the air with a speed vo = 42 m/s. Neglect air resistance. 1. Find the maximum height h reached by the arrow, in meters. 2. Write an expression for the time the arrow is in the air until it returns to launch height in terms of known quantities.

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Michelle · Answer 1

1. V = Vo + at = 42 - 32t = 0 t=1.3125 seconds

d = Vot - 16t^2 = 42*1.3125 - 16*1.3125^2 = 27.5625 m

2, T = Vot + 16t^2 = 1.3125 + 1.3125 = 2.625 seconds