Question

A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. What is the initial momentum of the blue train?

A. 20 kgm/s
B. 200 kgm/s
C. 50 kgm/s
D. 0 kgm/s

Answer 1

B or 200 Kgm/s…. Let me know if I’m wrong

Answer 2

B. 200 kgm/s

Step-by-step explanation:

The initial momentum of the blue train can be calculated using the formula:

p = mv

where p is the momentum, m is the mass, and v is the velocity.

The mass of the blue train is 50 kg and its velocity is 4 m/s. Therefore, the initial momentum of the blue train is:

p = 50 kg x 4 m/s = 200 kgm/s

Therefore, the initial momentum of the blue train is 200 kgm/s, which is option B.