The stirring is done in order to mix the substance and create a uniform temperature distribution, so that there are no cold or hot areas in the substance.
1)a 2)D 3)a. I think the answers are
whats the example? That all yu should look it up on internet.
Answer:
9.5 seconds
Explanation:
You need to make the ending speed into meters per sec.
So it would be 120km/h = 33.33m/s
If the acceleration rate is 3.5m/s, then the final answer would equal to 9.5 seconds
Also btw rounding it up is a good idea too so 10 seconds if you round