A point moves along an arc of a circle of radius R. Its velocity depends on the distance covered s as `v=asqrts`, where a is a constant. Find the angle `alpha` between the vector of the total acceleration and the vector of velocity as a function of s.

Options

A. tan`alpha = (R )/(2s)`
B. `tan alpha = 2s//R`
C. `tan alpha = (2R)/(s)`
D. `tan alpha = (s)/(2R)`

Answer

B