Solution of task 7.7.15 from the collection of Kepe OE

Solution of task 7.7.15 from the collection of Kepe OE

7.7.15
The equation of motion of a point along a trajectory is given: s = 0,1 t2 + 0,2 t. Determine its normal acceleration at time t = 6 s. In the position occupied by the point at this moment, the radius of curvature of the trajectory? = 0.6 m (Answer 3.27)