If you run 10mph inside of a train that is moving 100mph, are you moving 110mph or 100mph?
In: Physics
I think this has been answered , but with the assumption that you are running in the same direction that the train is moving. If you ran towards the rear (opposite direction from the train) you would be moving 90 mph in the same direction as the train.
It’s also important to realize that speed depends on what you compare. The train is moving 100 mph relative to the ground, but the earth is rotating and is also orbiting the sun. So you could be moving a thousand miles per hour compared to the center of the earth, or millions of miles per hour compared to the sun.
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