A ball is thrown vertically upward with a speed of +13.0 m/s. (a) How high does

Question

A ball is thrown vertically upward with a speed of +13.0 m/s.
(a) How high does it rise?
1Your answer is incorrect.
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m

(b) How long does it take to reach its highest point?
2Your answer is correct. s

(c) How long does the ball take to hit the ground after it reaches its highest point?
3Your answer is correct. s

(d) What is its velocity when it returns to the level from which it started?
4Your answer is correct. m/s

Explanation / Answer

v^2 = v(initial)^2 + 2ax 0 = (13)^2 + 2(-9.8)x x= 8.62 meters b) v=v(initial) + at 0 = 13 + (-9.8)t t = 1.326 seconds c) should be same as b, except switch v and v initial d) v=v(initial) + at v=13 + (-9.8)(2.653) = -13 m/s

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