A 73.0 kg father and his 45.0 kg son are sitting on opposite sides of a 4.00 m seesaw at the playground. The pivot point is fixed at the mid-
point of the board. Where must the father position himself to horizon-
tally balance the seesaw if his son sits at the end of the board?

Global warming was a major concern some people do not care global warming is fake it is not real the percentage of it happening  is slight 

The object's initial distance above the groundthe object's initial velocity

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.