A tennis player tosses a tennis ball straight up and then catches it after 1.88 s at the same height as the point of release. (a) What is the acceleration of the ball while it is in flight? magnitude     m/s2 direction      ---Select--- upward downward The magnitude is zero. (b) What is the velocity of the ball when it reaches its maximum height? magnitude     m/s direction      ---Select--- upward downward The magnitude is zero. (c) Find the initial velocity of the ball. m/s upward (d) Find the maximum height it reaches. m

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Projectile Motion