A sprinter records a time of $11.0\ \text{s}$ for a $100\ \text{m}$ race. At the start, she accelerates uniformly from rest until she reaches a speed of $10\ \text{m s}^{-1}$. After that, she continues at a constant speed of $10\ \text{m s}^{-1}$ up to the finish line. What is the sprinter’s uniform acceleration during the first part of the race?
- A$0.5\ \text{m s}^{-2}$
- B$0.91\ \text{m s}^{-2}$
- C$1.7\ \text{m s}^{-2}$
- D$5.0\ \text{m s}^{-2}$