# The position of an object moving along a line is given by #p(t) = 4t - tsin(( pi )/8t) #. What is the speed of the object at #t = 7 #?

##### 1 Answer

Oct 12, 2017

I tried this (but check my maths):

#### Explanation:

To find the velocity we can derive the function of position (in meter I think) with respect to

Let us now evaluate this at