Question

Soccer ball is heading east positive direction with momentum of 2kgm/s. It is kicked backwards and a fraction of a second later is moving west negative direction withmomentum of -2.3. What impulse did the kicker put on the ball on kgm/s?

Answer 1

-4.3 kgm/s

Step-by-step explanation:

Impulse which the soccer ball experiences is equal to the change in momentum of a body.

It is given mathematically as:

Impulse = m*Δv =
`mv - mu`

Initial momentum of soccer ball = 2 kgm/s

Final momentum of the soccer ball = -2.3 kgm/s

Therefore, Impulse will be:

Impulse =
`-2.3 - 2`

Impulse =
`-4.3 kgm/s`

The impulse put on the soccer ball by the kicker is -4.3 kgm/s.