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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Physics

Silas

12 June, 07:31

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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Koen Joyce · 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