A particle is moving along an elliptical path with constant speed. As it moves from A to B, magnitude of its acceleration :

Options

A. Continuously increases
B. continuoulsy decreases
C. remains constant
D. first increases and then decreases

Answer

B

Explanation

`a_(1)=(dv)/(dt)=0`
`a_(c)=(v^(2))/R`
From A to B radius of curvature increases

so, acceleration decreases.