Question

two spherical balls of masses 2kg and 3kg respectively are moving towards each other with velocities 6 m/s and 4m/s respectively..what must be the velocity of small ball after collision if the velocity of a bigger ball is 3m/s?​

Answer 1

Answer :

Initial velocity of 2kg mass = 6m/s

Initial velocity of 3kg mass = -4m/s

[-ve sign shows opposite direction]

Final velocity of 3kg mass = 3m/s

We have to find final velocity of 2kg mass$.$

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◈ In any kind of collision, Linear momentum of system is conserved.

Momentum is measured as the product of mass and velocity.

➝ Initial P = Final P

➝ m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

➝ (2×6) + (3×-4) = (2v₁) + (3×3)

➝ 12 - 12 = 2v₁ + 9

➝ 2v₁ = -9

➝ v₁ = -9/2

➝ v₁ = -4.5 m/s

Hence, small ball will move at velocity of 4.5mps in opposite direction after collision.

Answer 2

Answer:4.5

Explanation:But some explain it