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# A disc of radius r moving ion perfectly smooth surface at aspeed v collides elastically with an identical stationarydisc.Express the magnitude and direction of the velocity of each ofthe discs after t

A disc of radius r moving ion perfectly smooth surface at aspeed v collides elastically with an identical stationarydisc.Express the magnitude and direction of the velocity of each ofthe discs after the collision as a function of the impact parameterd.

Also solve the problem assuming the mass of the moving disc tobe m1 and radius r1 and thecorresponding parameters for disc# 2 are m2and r2.