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A 2000-kg car going 30 m/s collides head-on with a 5000-kg truck going at the same speed. If the truck comes to a halt, The car's final velocity is

Respuesta :

Answer:

So, as we the data given and we need to calculate the final velocity,v₂ of the mass,m₁ inside the collision with m₂. So, as we know the value of v₁ and m₁, then we can have the results by placing all the values inside the formula.

Explanation:

The formula given to us in case of elastic collision:

  • m₁v₁i+m₂v₂i=m₁v₁f+m₂v₂f,
  • By placing all the values in the equation given above, as;
  • (2000)×(30)+(5000)×(30)=(2000)×(v₁f)+(5000)×(0"as the truck stops),
  • (6000)+(5030)=(2000)×(v₁f)+(0),
  • 11030/2000=v₁f,
  • v₁f=5.515 m/sec⇒Ans

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