1. The position of a particle in motion in the plane at time is

At time , determine the following:

(a) The speed of the particle

8.85663593

(b) The unit tangent vector to

.9936053 .112909688

(c) The tangential acceleration

?

(d) The normal acceleration

?

I figured out the speed and T(t) but i have no idea how to find the aT and aN. Please help out.