A small rubber ball is launched by a compressed-air cannon


A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 18.9 m/s directly upward. Choose upward as the positive direction in your analysis.

(a) How long does it take to reach the maximum height?

s

(b) How long does it take to reach the ground after it reaches its highest point?

s

(c) What is its velocity just before it hits the ground? (Indicate the direction with the sign of your answer.)

m/s

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Physics: A small rubber ball is launched by a compressed-air cannon
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