A kicked ball rolls across the grass and eventually comes to a stop in 4.0 sec. When the ball was kicked, its initial velocity was 20 mi/ hr

Question

A kicked ball rolls across the grass and eventually comes to a stop in 4.0 sec. When the ball was kicked, its initial velocity was 20 mi/ hr. What is the acceleration of the ball as it rolls across the grass?

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Mộc Miên 5 years 2021-08-31T10:15:07+00:00 1 Answers 11 views 0

Answers ( )

  1. thienhuong
    0
    2021-08-31T10:16:59+00:00
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    Answer:

    -2.24 m/s²

    Explanation:

    Given:

    v₀ = 20 mi/hr = 8.94 m/s

    v = 0 m/s

    t = 4.0 s

    Find: a

    v = v₀ + at

    0 m/s = 8.94 m/s + a (4.0 s)

    a = -2.24 m/s²

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