A ball is thrown straight upward with a velocity of 39 m/s.How much time passes before the ball strikes the ground? (Disregard air resistance. )
A)8.0 s
B)4.0 s
C)2.4 s
D)1.2 s

Name: A ball is thrown straight upward with a velocity of 39 m/s.How much time passes before the ball strikes the ground? (Disregard air resistance. ) A)8.0 s B)4.0 s C)2.4 s D)1.2 s
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Question

Quizplus · Accepted Answer

The time to reach the highest point is given by t = v/g = 39 m/s / 9.8 m/s² = 4 s. The total time for the round trip is twice this, so 8 s.

A Ball Is Thrown Straight Upward with a Velocity of 39