A train is traveling at 50 m/s. What is this speed in kilometers per hour?

To convert the speed from meters per second to kilometers per hour, you can use the conversion factor where 1 meter per second is equal to 3.6 kilometers per hour. This is derived from the fact that there are 1000 meters in a kilometer and 3600 seconds in an hour.

Starting with the speed of the train:

1. Given speed = 50 m/s.

2. To convert this speed to kilometers per hour, multiply by 3.6:

( 50 , \text{m/s} \times 3.6 , \text{km/h per m/s} = 180 , \text{km/h} ).

Thus, the train's speed of 50 m/s is equivalent to 180 kilometers per hour. This conversion shows the relationship between these two units of speed and effectively demonstrates how to perform unit conversions in physics.