After a big snowfall, you take your favorite rocket-powered sled out to a wide field. The field is 217 m across, and you know that your sled accelerates at a rate of 3.85 m/s 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? amount of time: S How fast will the sled be moving when it reaches the other end of the field? speed at the end of the field: m/s How fast will the sled be moving when it is halfway across the field? speed halfway across the field: m/s