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5 July, 04:43

A race car has a centripetal acceleration of 18.75 m/s2 as it goes around a curve. If the curve is a circle with radius 12 m, what is the speed of the car? A. 15 m/s B. 9.8 m/s C. 1.6 m/s D. 17.2 m/s

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Answers (2)
  1. 5 July, 07:58
    0
    15 m/s
  2. 5 July, 08:37
    0
    Option (A) is correct.

    Explanation:

    The centripetal acceleration is given by

    a = v²/r

    V = velocity

    r = radius = 12 m

    a = centripetal acceleration = 18.75 m/s²

    18.75 = v²/12

    v²=18.75 x 12

    v²=225

    v = 15 m/s
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