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

Question

Physics

Lea

9 March, 10:42

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

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Answers (2)

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Kelsie Graham · Answer 1

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.

Chandler Chung · Answer 2

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