Posted by **amy** on Friday, September 2, 2011 at 12:48am.

two boys start running straight toward each other from two points that are 100m apart,one runs with a speed of 5m/s while the other moves at 7m/s.how close are they to the slower one's starting point when they reach each other

- physics -
**Wilson**, Friday, September 2, 2011 at 1:15am
Assuming they travel in one-dimension we can use the x(t)= vt+1/2 at^2.

The slower boy will travel a distance X and the faster boy will travel a distance 100-X because X will be the meeting point. And there is no acceleration involved, so the equation will look like x=5t and 100-x = 7t. Solve for T on both side because they meet at the same time so both t will equal and the rest is just simple algebra

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