If y,v and a represent displacement, velocity and acceleration at any instant for a particle executing SHM, which of the following statements are true?

Options

A. v and y may have same direction.
B. v and a may have same direction.
C. a and y may have same direction.
D. a and v may have opposite direction.

Answer

A, B, D

Explanation

In SHM, direction of v and a may be same or oppsite and aslo direction of y and v may be same but direction a and y never same because `a=-omega^2y` (always oppsite to y).