If 2 trains are going at the speed of sound then what is the speed they will stop at

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

Why should seat belts not be mandatory quick plz

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the