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

- Physics -
**Marilyn**, Friday, September 18, 2015 at 12:00pm
a.37.4m/s b.5 s

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