A hockey puck hits the board with a velocity of 10m/s at an angle of 20deg to the board. It is deflected with a velocity of 8m/s at 24deg to the board. If the time of impact is 0.03s, what is the average acceleration of the puck?

$\displaystyle (2.3 x 10^2m/s^2$ out from the board at an angle of 107deg)

Thank you!