How much radiant energy from the sun, on average, reaches each square meter at the top of earth's atmosphere each second? what is the average solar power, averaged over a whole year, which reaches the united states?

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0