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March 27, 2017

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A tennis ball is thrown vertically upward with an initial velocity of +8.0 m/s.

a. what will the ball's speed be when it returns to its starting point?

b. how long will the ball take to reach its starting point?

  • Physics - ,

    a. The same speed, downward.
    b. hf=hi+vi*time - 1/2 g time^2
    hf, hi are the same: zero. Find time.

  • Physics - ,

    a.) -8.0m/s
    b.)1.63s

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