Question

A racquet ball with mass m = 0.238 kg is moving toward the wall at v = 12.4 m/s and at an angle of θ = 31° 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. 1)What is the magnitude of the initial momentum of the racquet ball?

Answer 1

Answer:

$||\vec p || = 2.951\,\frac{kg\cdot m}{s}$

Explanation:

The initial momentum of the racquet ball is:

$||\vec p || = (0.238\,kg)\cdot (12.4\,\frac{m}{s} )$

$||\vec p || = 2.951\,\frac{kg\cdot m}{s}$