if the masses of 2 balls are 2kg and 3kg and the velocities before collision are 2m per second and 5 m per second respectively then find the velocity of the second ball after collision if the first ball has a velocity of 3 m per second
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m1v1 + m2v2 = m1v1' + m2v2'
2*2 + 3*5 = 2*3 + 3*v
v = 13/3 m/s
2*2 + 3*5 = 2*3 + 3*v
v = 13/3 m/s
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