Q. A baseball outfielder throws a 0.150-kg baseball at a speed of 38 m/s and the initial angle of 33.0°. What is the kinetic energy of baseball at the highest point of the trajectory?
Q. A 250-g ball collides with a wall. The ball's velocity and the force exerted on the ball by the wall. What is v_{{rm{f}}x}, ball's rebound velocity?