Aboulder on the mythical planet mongo drops off a cliff and falls from rest 1000 m in 10.0 s. (a) what's the initial speed of the boulder?
(b) determine the acceleration due to gravity on mongo. ignore friction.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)