posted by Em .
A billiard ball of mass m = 0.150 kg hits the cushion of a billiard table at an angle of θ1 = 60.0° at a speed of v1 = 2.50 m/s. It bounces off at an angle of θ2 = 47.0° and a speed of v2 = 2.20 m/s.
a) What is the magnitude of the change in momentum of the billiard ball?
b) In which direction does the change of momentum vector point? (Take the x-axis along the cushion and specify your answer in degrees.)
Thank you for Any and All Help!!