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Two small glass spheres of mass 10g and 20g are moving in a straight line in the same direction with the velocities of 3m/s and 2m/s respectively. They colied with each other and after collision, glass sphere of mass 10g moves with a velocity of 2.5 m/s. Find the velocity of second ball after collision.ANSWER IT FAST EXTREMELY URGENT. |
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Answer» INITIAL momentum of first SPHERES = MV = 0.1×3=0.3kg m/s initial momentum of second SPHERE = mv = 0.2×2 = 0.4kg m/s After the collision final momentum of first sphere= mv = 0.1×2.5=0.25kg m/s final momentum of second sphere =mv =0.2×v = 0.2kg m/s initial momentum = final momentum 0.3+0.4 = 0.25 + 0.2v 0.7 = 0.25 +0.2v 0.45 = 0.2v v= 2.25m/s |
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