a) A baseball player hits a triple and end up on third base. A baseball "diamond" is a square, each side of length 27.4 m, with home plate and the three bases on four corners. What is the magnitude of his displacement?
b) A volleyball is spiked so that it has an initial velocity of 15m/s directed downward at an angle of 55 degrees below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?