# Impulse

### Impulse

Impulse is defined as the product of the force (F) acting on an object and the time of action (t).

1. Impulse is the product between the force, F with the time of impact, t.
2. Impulse is also defined as the change in momentum.
3. Impulse is a vector quantity.
4. An impulse will cause velocity change of an object.

#### Formula of impulse

Impulse is the product of force and time.

Impulse=F×t
Impulse = momentum change

Impulse=mv−mu

Example:
A billiard ball weighing 0.25 kg is in a stationary state on a smooth billiard table. The ball is then given an impulse as much as 3.0Ns horizontally. What is the velocity of the ball after impact?