I was able to do pretty much every other problem dealing with this topic except this one which is bothering me. Here is the question:(adsbygoogle = window.adsbygoogle || []).push({});

The distance from New York to Los Angeles is about 5000 km and should take about 50 h in a car driving at 100 km/h. (a) How much shorter than 5000 km is the distance according to the car travelers? (b) How much less than 50 h do they age during the trip?

Can someone please give me a hint as to which equation I am looking for to solve this problem? Basically all equations with sqrt(1-(u^2/c^2)) are coming out completely wrong for me.

I am able to get to sqrt(1-(27.78^2/3x10^8)) but dont really know how to deal with subtracting such a small number. Obviously my calculator is throwing 1 at me which screws up the equation.

Any help is appreciated.

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# Homework Help: Special Relativity, change in distance and time at slow speeds

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