Acar traveling on a straight northerly path to answer this question. at what time would the magnitude of the velocity reach 72 km/hr? 12.00 s 144.0 s 705.6 s the velocity of this car is not changing. it is constant at 6.00 km/hr.

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