A ball is rolling across the floor at a constant speed. What will happen to the ball if it is exposed
to an unbalanced force in the same direction that it is moving?

-It will immediately stop
-it’s speed will decrease
-it’s speed will increase
-it’s motion will be unchanged

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 (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to