Velocity time graph of a particle in straight liine motion is in shape of a semicircle of radius R as shown in figure Its averge acceleration from t = 0 to t = R is :

Options

A. `0 m//s^(2)`
B. `1 m//s^(2)`
C. `R m//s^(2)`
D. `2R m//s^(2)`

Answer

B

Explanation

`a_(avg) = (Delta vec(v))/(Delta t) = (0 - 0)/(Delta t) = 0`