Let's m1 = 2 kg, m2 = 3 kg
u1= 5m/s and u2 = 2 m/s
After collision speed of mass m2 = 3 kg -
v2 = ((m2-m1)u2 + 2m1u1)/(m1+m2)
= ((3-2)x2 + 2x2x5)/(3+2)
= 4.4 m/s
Speed = 4.4 m/s
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please be descriptive so i actually understand it.
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