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3box cars connected moving at steady velocity 24m/s. The hit a fourth box car at rest and stick together. Find the speed of the 4cars and how much energy is dissipated in the collision



Answer :

MathPhys

Answer:

18 m/s

Explanation:

The total momentum of the system is conserved during the collision. Momentum is equal to mass times velocity.

p₁ = p₂

m₁u = m₂v

(3m) (24 m/s) = (4m) v

v = 18 m/s

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