A railroad diesel engine coasting at 1.2 m/s runs into a stationary flatcar that has a mass of 1000 kg. The diesel weighs 5 times as much as the flatcar. Assuming the cars couple together, how fast are they moving after the collision? What type of collision is this?

Question

Esther Shelton

Physics

28 November, 20:02

A railroad diesel engine coasting at 1.2 m/s runs into a stationary flatcar that has a mass of 1000 kg. The diesel weighs 5 times as much as the flatcar. Assuming the cars couple together, how fast are they moving after the collision? What type of collision is this?

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Answers (1)

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Imani Owens · Answer 1

V = 0.2 m/s

Explanation:

given,

speed of the diesel engine = 1.2 m/s

mass of car = 1000 Kg

using conservation of momentum

m₁v₁ + m₂v₂ = (m₁ + m₂) V

v₂ = 0 for stationary flatcar

1.2 m₂ = (5 m₂ + m₂) V

1.2 m₂ = (6 m₂) V

V = 0.2 m/s

hence, the velocity moving after collision is equal to 0.2 m/s