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2 March, 05:06

A car traveling north slows down from 40 m/s to rest in a distance of 100 m. What was the magnitude of its average acceleration in m/s^2? and what direction of the car or is there not enough information?

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  1. 2 March, 05:27
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    8 m/s² south

    Explanation:

    Given:

    v₀ = 40 m/s

    v = 0 m/s

    Δx = 100 m

    Find: a

    v² = v₀² + 2a (x - x₀)

    0² = 40² + 2a (100)

    a = - 8

    The acceleration is 8 m/s² south.
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