A car is travelling with a velocity of 90km/hr and other with 7 km/hr in opposing directions, find the relative velocity
between them.
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What is the kinetic energy of a 10-kg bicycle moving at 10 m/s

When using the scientist method, which step comes last?

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