Question

ASAP! I NEED THIS DONE AS QUICKLY AS POSSIBLE WITH WORKING OUT

After t seconds, a particle P has position vector
r = [(3t³- t + 3)i + (2t²+ 2t - 1)j] m
(a) Find an expression for the velocity of P in terms of t
(b) Find an expression for the acceleration of P in terms of t

Answer 1

Yo sup??

To find velocity just differentiate the function r once wrt to t

v=dr/dt=(9t^2-1)i+(4t+2)j)

and to find acceleration differentiate v wrt to t

a=dv/dt=18ti+4j

Hope this helps.