How long is the ball in the air

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Reference no: EM13559393

A ball is launched directly upward from ground level with aninitial speed of 19 m/s. (Air resistanceis negligible.)
a) How long is the ball in the air?
b) What is the greatest height reached by the ball?
c) How many seconds after launch is the ball 4 m above the release point?
after being thrown (first time)
after being thrown (second time)

Reference no: EM13559393

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