How fast was the ball moving while it left the racquet

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Reference no: EM1315187

Q1. A tennis player standing 12.70 m from the net hits the ball at 2.40° above the horizontal. To clear the net, ball must rise at least 0.1403 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving while it left the racquet?

Q2. A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.

Reference no: EM1315187

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