# If the equation of motion of a particle is given by s = A Cos ( ω t+? ), the particle is said to undergo simpleharmonic motion.(a) Find the velocity of the particle at time  t.(b) When is the velocity 0?

Question

If the equation of motion of a particle is given by s = A Cos ( ω t+? )
, the particle is said to undergo simple
harmonic motion.
(a) Find the velocity of the particle at time  t.
(b) When is the velocity 0?