1. A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg. After collision, the two sticked and moved together with the same speed. Solve for the final speed of the combined object after collision and identify their direction.​

Respuesta :

Given,

A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg.

What is momentum?

Momentum is a product of the mass of a particle and its velocity. Momentum is a vector quantity which means it has both magnitude and direction. Its formula = mass × velocity.

Solve for momentum:

M= (42,000kg)(40,000kg) / (10m/s)

M = 42,000 kilograms - 40,000 kilograms

M = 2,000kg

M = 2,000 kg ÷ 10m/s

= 200m/s

-Thus they collison at the same speed of 200m/s.

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