The co-ordinates of a moving particle are and , where and are constants. the velocity of a particle at any instant is
Step 1. Given data
,
Step 2. Formula to be used.
Particle velocity is the velocity of a particle in a medium as it transmits a wave is called as the velocity of the particle.
The velocity of particle is,
Step 3. Find the velocity of the particle.
The velocity of the particle is,
So,
So, the velocity of the particle is .
Hence, option is the correct answer.