A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.380kg. The ball approaches the cushion with a velocity of +2.10m/s and rebounds with a velocity of -1.80m/s. The ball remains in contact with the cushion for a time of 3.50x10^-3s. What is the avg net force (Magnitude and direction) exerted to the ball by the cushion

Question

anonymous · Answer

Impulse is defined as:
$$Impulse = F \Delta t$$
It is also equivalent to the change in momentum:
$$Impulse = m \Delta v$$

These hold in each direction (x, y, z). Using this information, can you take over?

anonymous · Answer

No i m still confused sorry @vandreigan

michele_laino · Answer

what is the momentum of the ball before collision?

anonymous · Answer

honestly I have no clue I am so lost in this question @Michele_Laino

michele_laino · Answer

please, don't worry, please compute the momentum of the ball before the collision, what is it?
hint, use this formula:
$$m \times v$$

zephyr141 · Answer

|dw:1423106295572:dw|i guess this is what is happening right?