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11 October, 18:22

An object is moving at 100 m/s and comes to a stop in 25 seconds. What is its acceleration?

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  1. 11 October, 18:35
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    -4m/s²

    Explanation:

    a = Δv/t

    Our change in velocity is equal to v₂-v₁, which in this equation is 0 m/s - 100 m/s, so our change in velocity is - 100m/s. Now plug that and our time into the equation, like so:

    a = (-100m/s) / (25s) a = - 4m/s².
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