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23 June, 18:11

If an object is thrown in an upward direction from the top of a building 160 ft. high at an initial speed of 21.82 mi/h., what is its final speed when it hits the ground? (Disregard wind resistance. Round answer according to significant figures and do not reflect negative direction in your answer.

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  1. 23 June, 18:19
    0
    I used an app called Newtonium to do the calculations.
  2. 23 June, 18:33
    0
    When does it hit?

    30mph = 44ft/s

    160+44t-16t^2 = 0

    find t then plug that into

    v (t) = 44-32t
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