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 yellow train?

A. 200 kgm/s
B. 80 kgm/s
C. 800 kgm/s
D. 100 kgm/s

Answer 1

Answer: 200

Step-by-step explanation:

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.