Answer:
![11(m)/(s)](https://img.qammunity.org/2020/formulas/biology/high-school/hxwyci3qheut3tnqtj4vwmpjygtn9d6kk5.png)
Step-by-step explanation:
As per the Newton's first law of motion,
![v = u + at\\](https://img.qammunity.org/2020/formulas/biology/high-school/pifur7uk41glp38k17bmp7o90asljvomt4.png)
where "v" is the final speed
"u" is the initial speed
"a" is the acceleration
and "t" is the time taken
Substituting the given values in above equation, we get -
![(m)/(s)\\](https://img.qammunity.org/2020/formulas/biology/high-school/bqq8ahlo67smp0o5bf6kz6jkd9edxhqipd.png)
The cart be traveling at a speed of
by the time it reaches level ground.