the car A MASS 1500 KG TRAVELLING AT 25M/S COLLIDS WITH ANOTHER CAR N OF MASS 1000 KG TRAVELLING AT 15M/S IN THE SAME DIRECTION AFTER COLLISION THE VELOCITY OF CAR A BECOME 20M/S CALCULATED THE VELOCITY OF CAR B AFTER COLLISION
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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
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