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20 October, 20:03

A car is moving 60 km/h when the driver sees a signal light 40 m ahead turn red. The car can slow with an acceleration at the -.5g, where g is 9.8 m/s^2. What was her stopping distance? Assume zero reaction time. You should convert 60 km/h to m/s.

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  1. 20 October, 23:21
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    28.34m

    Explanation:

    initial velocity = 50/3 m/s (U)

    final velocity = 0 (V)

    acceleration = - 4.9 m/s^2 (A)

    S = V^2-U^2/2A

    S = 28.34m
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