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a ball is thrown upward at a speed of 12 m/s. It will reach the top of its path in about:

a) 0.6 sec
b) 1.2 sec
c) 1.8 sec
d) 2.4 sec

Please explain how you find the answer!!! I cannot figure it out

  • Science -

    speed at the top is zero.


    t= about ...

  • Science -

    I learned the formula to be v=gt...why are you subtracting?

    Also what is vf and vi?

  • Science -

    vf= final velocity, which is zero at the top.
    vi is initial velocity.

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