A ball is thrown vertically upward with a speed of 17.0 m/s. (a) How high does it rise?
(b) How long does it take to reach its highest point?
(c) How long does it take to hit the ground after it reaches its highest point?
(d) What is its speed when it returns to the level from which it started?

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?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

What is special about a dc circuit ?