Aperson can run 280 m in 68 s. at what speed are they running?

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?

If steel is more dense that lake water, why can a boat float

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?