Very simple motion problem, i just cant get it

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SUMMARY

The discussion centers on calculating the time it takes to travel from an airport gate to baggage claim while walking on a moving sidewalk. When the sidewalk is broken, it takes 50 seconds to walk the distance. When standing on the working sidewalk, it takes 75 seconds. If a person walks while riding the moving sidewalk, the travel time will be less than 50 seconds, as the combined effect of walking speed and the sidewalk's speed increases overall velocity.

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When the moving sidewalk at the airport is broken, as it often seems to be, it takes you 50 s to walk from your gate to baggage claim. When it is working and you stand on the moving sidewalk the entire way, without walking, it takes 75 s to travel the same distance.

How long will it take if you walk while riding on the moving sidewalk :confused:
 
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Consider the sidewalk your unit of length. Use this to produce the average velocities describing your motion in either situation.

K, now what can you do with those velocities that might describe the new situation?
 


If you walk while riding on the moving sidewalk, it will take you less than 50 seconds to travel from your gate to baggage claim. This is because the moving sidewalk is already helping you move forward, so walking will make you travel even faster. The exact time will depend on your walking speed, but it will definitely be less than 50 seconds.
 

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