A car accelerated from 0 m/s to 50 m/s in 10 s. What was the average acceleration?

Which statement best explains why an object weight less on mercury than it does on earth

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?

What is the role of lenses in microscopy?