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14 December, 06:25

A 1,500 kg car hits a boulder with a force of 500 N, and the collision takes 0.5

seconds. What is the magnitude of its impulse?

A. 75,000 kg-m/s

B. 50 kg-m/s

C. 250 kg-m/s

D. 750 kg-m/s

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Answers (1)
  1. 14 December, 06:43
    0
    Answer: C.

    250 kg-m/s

    Explanation:

    Given that the

    Mass M = 1,500 kg

    Force F = 500 N

    Time t = 0.5 seconds

    From Newton's second law of motion which state that the rate of change of momentum is proportional to the applied force.

    F = mV/t

    Ft = mV

    Where ft = impulse: the product of time and applied force

    Substitutes force and time into the formula

    Ft = 500 * 0.5 = 250 Ns
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