Car (A) of mass 1500kg travelling at 25m/s collides with another Car (B) of mass 1000kg travelling at 15m/s in the same direction. After collision velocity of Car (A) becomes 20m/s.
Calculate the velocity of Car (B) after collision.
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Answer:
m1 = 1500kg
v1 = 25 m/s
m2 = 1000kg
v2 = 40 m/s
v3 = 20 m/s
v4 = ?
m1v1+m2v2 = m1v3+m2v4
(1500×25)+(1000×40) = (1500×20)+ 1000v4
(37500 + 4000) - 30000 = 1000v4
v4 = 11500/1000
v4 = 115/10
v4 = 11.5 m/s
hope..it,..helps
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