Question

A yellow train of mass 100 kg is moving at 8 m/s toward an orange train of mass 200 kg traveling in the opposite direction on the same track at a speed of 1 m/s. What is the initial momentum of the orange train?.......... A. 200 kgm/s B. -200 kgm/s C. 100 kgm/s D. 80 kgm/s

Answer 1

Answer:The answer is option A.

Momentum=mass×velocity.

Orange train=mass is 200 and velocity is 1.

which is 200×1=200kgm/s.

Answer 2

The initial momentum of the orange train is 200 kgm/s.

What is momentum?

• Momentum is the product of mass and velocity of any object.
• Momentum is denoted by P.
• Momentum P = mv , where m = mass and v = velocity.
• Momentum is a vector quantity.

How to calculate momentum of the orange train?

The orange train is having mass of 200 kg and it is travelling with speed of 1 m/s.

                     So, the orange trains momentum will be ,

                               P = mv

                            ∴ P = 200 x 1

                            ∴ P = 200 kgm/s

Therefore, the initial momentum of the orange train is 200kgm/s.

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