Question

The co-ordinates of a moving particle at a time are given by x=5 sin 10t, y=5cos 10t. The speed of the particle

Answer 1

Position of particle following thiese coordinates will be, r = (5 sin 10t) i^ + (5 cos 10 t) j^
So speed of the particle is, v =dr/dt = ( 50 cos 10t) i^ + (-50 sin 10t) j^