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6 April, 02:19

What is the impulse of a 3kg object accelerating from rest to 12m/s?

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Answers (2)
  1. 6 April, 02:21
    0
    Impulse = force * Δtime = mass * Δvelocity

    In this case, initial velocity (u) = 0 m/s

    final velocity (v) = 12m/s

    Δvelocity = v-u = 12

    Impulse = 3kg * 12

    = 36 Ns
  2. 6 April, 02:48
    0
    At rest ... momentum = 0.

    At 12 m/s ... momentum = 36 kg-m/s.

    Change in momentum = 36 kg-m/s.

    That's the impulse that caused the change. The acceleration doesn't matter.
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