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PhysicsAdvice
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if a ball is thrown and caught at the same height with constant horizontal velocity and no vertical displacement is its initial and final velocity the same?
since v2y^2=v1y^2+2aDy, no displacement means final vertical velocity will be the same as initial,
since v2x=v1x, horizontal velocity will be the same, so v2=v1
since v2y^2=v1y^2+2aDy, no displacement means final vertical velocity will be the same as initial,
since v2x=v1x, horizontal velocity will be the same, so v2=v1