Noninertial frame projectile. A device shoots a small ball horizontally with speed 0.288 m/s from height h = 0.900 m above an elevator floor. The ball lands at distance d from the base of the device directly below the ejection point. The vertical acceleration of the elevator can be controlled. What is the elevator's acceleration magnitude a if d is (a) 14.0 cm, (b) 20.0 cm, and (c) 7.50 cm? (a) Number i (b) Number i (c) Number Units Units Units

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Projectile Motion