Homework Help: Physics

Posted by Jordan on Wednesday, February 13, 2013 at 6:55pm.

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 25 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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