# An object's two dimensional velocity is given by #v(t) = ( tsin(pi/3t) , 2cos(pi/2t )- t )#. What is the object's rate and direction of acceleration at #t=8 #?

##### 1 Answer

Jun 16, 2017

The rate of acceleration is

#### Explanation:

The acceleration is the derivative of the velocity

So,

when

The rate of acceleration is

The direction is