How long does it take the average train to stop if it is traveling at 55 mph?

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Multiple Choice

How long does it take the average train to stop if it is traveling at 55 mph?

Explanation:
Stopping distance is the key idea. A train has a lot of momentum, so even with brakes it takes a long stretch of track to slow to a stop. The total distance from when braking begins to a full stop (including any reaction time) is typically about a mile at 55 mph. So one mile is the best match among the options. The others are too short or too long for standard braking at this speed.

Stopping distance is the key idea. A train has a lot of momentum, so even with brakes it takes a long stretch of track to slow to a stop. The total distance from when braking begins to a full stop (including any reaction time) is typically about a mile at 55 mph. So one mile is the best match among the options. The others are too short or too long for standard braking at this speed.

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