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A cheetah is hunting. Its prey runs for 2.9 s at a constant velocity of +9.9 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?

  • physics - ,

    d1 = 9.9m/s * 2.9s = 28.71m.

    d = Vo*t + 0.5at^2 = 28.71m
    0 + 0.5a(2.9)^2 = 28.71,
    1.45a = 28.71,
    a = 19.8m/s^2.

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