Posted by **Anonymous** on Wednesday, October 10, 2007 at 3:32am.

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 11.0 m/s when the hand is 1.50 m above the ground.

How long is the ball in the air before it hits the ground? (The student moves her hand out of the way.)

v(final)=v(initial)+at

initial velocity is 15 and final velocity is zero. acceleration is 9.8 right.

how does height fit into this equation. isn't that necessary too.

can u please help me. i keep getting .738s as my answer

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