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A ball is thrown horizontally from the top of a 95 m building and lands 110 m from the base of the building.

A ball is thrown horizontally from the top of a 95 m building and lands 110 m from the base of the building. Ignore air resistance, and use a coordinate system whose origin is at the top of the building, with positive y upwards and positive x in the direction of the throw. 


Part (a) How long is the ball in the air in seconds? 

Part (b) what must have been the initial horizontal component of the velocity, in meters per second? 

Part(c) What is the vertical component of the velocity Just before the ball hits the ground in meters per second? 

Part (d) What is the magnitude of the velocity of the ball just before it hits the ground in meters per second?

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