A ball is thrown upward with an initial velocity (v) of 15 meters per second. Suppose that the initial height (h) above the ground is

Question

A ball is thrown upward with an initial velocity (v) of 15 meters per second. Suppose that the initial height (h) above the ground is 7
meters. At what time will the ball hit the ground? The ball is on the ground when S = 0. Use the equation S = -52 + vt + h.
The ball will hit the ground in how many
seconds?

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Khoii Minh 3 years 2021-08-07T08:33:15+00:00 1 Answers 16 views 0

Answers ( )

  1. taiduc
    0
    2021-08-07T08:34:52+00:00
    Reply

    Answer:

    Step-by-step explanation:

    Your equation is weird. The position equation for this situation is

    s(t)=-4.9t^2+15t+7 and set it equal to 0 to solve for the time it takes to hit the ground. Those times come out to be

    t = 3.47 sec and t = -.411 sec. But since time can never be negative, our time is 3.47 seconds

    (What is that -52?)

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