Answer:
Explanation:
It is given that,
Mass of lump, m₁ = 0.05 kg
Initial speed of lump, u₁ = 12 m/s
Mass of the cart, m₂ = 0.15 kg
Initial speed of the cart, u₂ = 0
The lump of clay sticks to the cart as it is a case of inelastic collision. Let v is the speed of the cart and the clay after the collision. As the momentum is conserved in inelastic collision. So,



v = 3 m/s
So, the speed of the cart and the clay after the collision is 3 m/s. Hence, this is the required solution.