Solution of task 7.8.11 from the collection of Kepe OE

Solution of task 7.8.11 from the collection of Kepe OE

7.8.11
Determine the speed of the point at the time when the radius of curvature of the trajectory? = 5 m, the tangential acceleration a? = 2 m / s2, and tg? = 3, where? - the angle between the vectors of velocity and acceleration of the point (Answer 5,48)