Two toy cars A and B are moving towards each other on a horizontal surface. The car A has mass of
60 g, and moves towards the right with a speed of 60 cm/s. The car B has a mass of 100 g and moves
towards the left with a speed of 20 cm/s. The two cars collide and get stuck to each other. With what
velocity will they move after the collision?
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Explanation:
m1 =60g
u1 = 60 cm / s
m2= 100 g
u2 = 20 cm / s
m1u1+ m2u2= m1 v1+ m2 v2
60×60+100×20=160×v
5600/160 =10m/s
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