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9 July, 17:47

I give a ball a push on an acclivity. The "start velocity" is on 7m/s. The time it took the ball to get back to me was 10 seconds. The acceleration is a constant. How much is the acceleration?

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Answers (2)
  1. 9 July, 18:35
    0
    -1.4 m/s²

    Explanation:

    The initial velocity is 7 m/s. When the ball rolls back, its velocity is - 7 m/s.

    Acceleration is change in velocity over change in time.

    a = Δv / Δt

    a = (-7 m/s - 7 m/s) / 10 s

    a = - 1.4 m/s²
  2. 9 July, 19:45
    0
    7:10

    Explanation:

    initial velocity=7m/s

    final velocity=0m/s
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