Final answer:
The train with a mass of 20 tons moving at 1 mph has more momentum than a human weighing 150 lbs.
Step-by-step explanation:
Momentum is the product of an object's mass and its velocity. It is a vector quantity, which means it has both magnitude and direction. The formula for momentum is:
Momentum = mass x velocity
In this case, a human weighing 150 lbs has a mass of approximately 68 kg. Let's assume their velocity is 1 mph, which is about 0.447 m/s.
So the momentum of the human is:
Momentum = 68 kg x 0.447 m/s = 30.396 kg·m/s
On the other hand, a train weighing 20 tons has a mass of 20,000 kg. If the train is moving at 1 mph, which is about 0.447 m/s, its momentum would be:
Momentum = 20,000 kg x 0.447 m/s = 8,940 kg·m/s
Therefore, the train has more momentum than the human.