a boy throws a ball straight up into the air it reaches the highest point of its flight after 4 seconds how fast was the ball going when it

Question

a boy throws a ball straight up into the air it reaches the highest point of its flight after 4 seconds how fast was the ball going when it left the boy’s hand

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Diễm Thu 4 months 2021-09-05T15:34:19+00:00 1 Answers 55 views 0

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    2021-09-05T15:36:11+00:00

    Answer:

    Gravity pulls down on the ball at g=-9.81 m/s^2. Up is positive, down is negative. The ball started at a certain initial velocity of Vi m/s. Time it took is t=4s. Final velocity is Vf=0 m/s, because at the highest point the ball stops moving.


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