Apolice car at rest, passed by a speeder traveling at a constant 120 km/h, takes off in hot pursuit. the police officer catches up to the speeder in 750 m, while maintaining a constant acceleration. calculate (a) how long it took the police car to overtake the speeder, (b) the required police acceleration, and (c) the velocity of the police car at the moment it reaches the speeder.

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