Two snooker balls travelling in opposite directions are in a head on collision on the snooker table. a) if both balls have the same mass? b) the first ball has 3 x the velocity of the second, then what will be the state of the balls after the colision?

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The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.

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