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Two objects each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 ms–1 before the collision during which they stick together. What will be the velocity of the combined object after collision?

Two objects each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 ms–1 before the collision during which they stick together. What will be the velocity of the combined object after collision?

Grade:12th pass

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
one month ago
Dear Student

Mass of the objects m1 = m2 = 1.5 kg
Velocity of first object v1= 2.5 m/s
Velocity of second object v2= – 2.5 m/s
Momentum before collision = m1v1= m2v2
= (1.5 × 2.5) + (1.5 × –2.5) = 0
Momentum after collision = m1+ m2= 1.5 + 1.5 = 3.0 kg
After collision v = ?
According to law of conservation of momentum
Momentum before collision = Momentum after collision
0 = 3 × v
v = 0



Thanks

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