The path traversed by a point on a circle of radius of 2 m, is expressed by the equation s = at2 + bt (m). Find speed, normal, tangential acceleration and full point of 0.5 seconds after the beginning of movement when a = 3m / s2, b = 1 m / s; the way the body has done a quarter of a second motion.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.