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## What is the impulse of a 3 kg object that starts from rest and moves to 20 m/s?

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## Answers ( )

Answer:The impulse on the object is 60Ns.

Explanation:Impulse is defined as the product of the force applied on an object and the time at which it acts. It is also the change in the momentum of a body.

F = m a

F = m()

⇒ Ft = m( – )

where: F is the dorce on the object, t is the time at which it acts, m is the mass of the object, is its initialvelocity and is the final velocity of the object.

Therefore,

impulse = Ft = m( – )

From the question, m = 3kg, = 0m/s and = 20m/s.

So that,

Impulse = 3 (20 – 0)

= 3(20)

= 60Ns

The impulse on the object is 60Ns.