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

## Answer This Question

## Related Questions

- physics - two boys start running straight towards each other from two points ...
- physics - Two runners approaching each other on a straight track have constant ...
- college algebra - Two cyclists, 64 miles apart, start riding toward each other ...
- maths - two sprinters runs the same race of 100m. One runs at a speed of 10m/s ...
- physics - Two friends, Al and Jo, have a combined mass of 171 kg. At an ice ...
- physics - two runners who live 10 miles apart leave home and start running ...
- Physics/Math - Two cars, 127 miles apart, start moving towards each other at the...
- Algebra - Two cyclists, 128 miles apart, start riding toward each other at the ...
- big lake - Two cyclists, 36 miles apart, start riding toward each other at the ...
- Algebra - Two cyclists leave towns 240km apart at the same time and travel ...

More Related Questions