1. The problem statement, all variables and given/known data A racquet ball with mass m = 0.224 kg is moving toward the wall at v = 15.1 m/s and at an angle of θ = 28° with respect to the horizontal. The ball makes a perfectly elastic collision with the solid, frictionless wall and rebounds at the same angle with respect to the horizontal. The ball is in contact with the wall for t = 0.078 s. I need to find: What is the magnitude of the change in momentum of the racquet ball? What is the magnitude of the average force the wall exerts on the racquet ball? 2. Relevant equations P=M*V F=.(5*M*V^2)/ Delta(X) 3. The attempt at a solution I was able to find momentum before the collision, which came out to be 3.3824, but I'm unsure how to add the vectors to get the correct momentum vectors to find the momentum after it hits the wall which will let me find the change in momentum.