Physics

Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 35 m/s
a) What is the velocity of the ball 4 seconds after it is thrown?
m/s

(b) How much time elapses before the ball reaches the high point in its flight?
s

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  1. (a)
    v = 35 - 3.1t
    solve for v when t=4

    (b)
    solve for t when v=0

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  2. i need help

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