- #1

- 5

- 0

- Homework Statement
- In the 100m dash, a sprinter accelerates from rest to top speed with an acceleration whose magnitude is 2.68m/s^2. After achieving top speed, he runs the remainder of the race without speeding up or slowing down. If the total race is run in 12secs how far does he run during the acceleration phase?

- Relevant Equations
- two phases I don't really know what to put here?

So what I have done is that on question 7 I know he is accelerating to constant my knowns are that it is from initial and acceleration is given so I have that for my first phase the second phase is that Your vfinal is your new initial for it and acceleration is the constant but you don't know what it is what I have done is got three equations and now I don't know what to do with them I also need help with 8 so I inserted my attempt but I don't know where to start a hint be nice or a solution I wouldn't mind both, to be honest.