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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?

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