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A steel ball is dropped onto a hard floor from a height of 1.575 m and rebounds to a height of 1.3 m


A steel ball is dropped onto a hard floor from a height of 1.575 m and rebounds to a height of 1.3 m. Use a coordinate system in which the vertical component of velocity is positive in the upwards direction.


 Part (a) Calculate its velocity, in meters per second, just before it strikes the floor. 

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