Given: a particle M is moving in coordinate plane Oxy. Position of the particle at certain instant t1 is specified by its coordinates xM= 2m; yM= 3m. Velocity projections of the particle are VMx= 3,6m/s; VMy= -1,2m/s. Acceleration projections of the particle are aMx= -1,7m/s2; aMy= -2,8m/s2.
Find: the angle α (in degrees) between velocity and acceleration of the particle M.