If a ball is thrown straight up 6 feet from the ground with an initial velocity of 90 ft/sec, the ball's height, in feet after t seconds, is s(t) (a) When will the ball be stationary? 90t – 16t2 + 6. - (b) How long will it take the ball to hit the ground? (c) Find the acceleration of the ball. (d) Find the jerk of the ball.

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