Posted by **Emily** on Thursday, September 30, 2010 at 6:39pm.

If 100 m sprinters accelerate from rest for 3.5 s at 2.8 m/s^2, how far have they run to this point? How long will it take them to complete the 100 m sprint, assuming they maintain their speed the rest of the way?

I found the distance, which is 17 m, and the distance they still have to run to complete the race, which is 83m. I also calculated their second velocity, which is 9.8 m/s. But when I divide 83m by 9.8 m/s,(since that's the velocity for the rest of the race) I don't get the correct answer, which is 12 s.

## Answer This Question

## Related Questions

- Physics - During a football game, A is 8.0 m behind B and is running at 7.0 m/s ...
- Math - Six sprinters have qualified for the finals in the 100-meter dash at the ...
- physics - how long will it take the sound of the starting gun to reach the ears ...
- Economics - Suppose a perfectly competitive firm has a cost function described ...
- PHYSICS - how long in seconds does it take for a car to accelerate from 0 to 100...
- physics - A certain elevator cab has a total run of 204 m and a maximum speed is...
- statistics - A professional basketball player has embarked on a program to study...
- Physics - You buy yourself a new Lamborghini which can accelerate from 0 to 62 ...
- physics -plz help - 1) A car is moving at 100 km/hr. Its mass is 950 kg. Find ...
- Physics - . The cheetah is the fastest running animal in the world. Cheetahs can...

More Related Questions