A particle moves according to the position function

f(t)=sin(pi(t)/4) , t>or equal to 0 , t in seconds, s in feet.

a. find the average velocity of the particle over the interval [1,5]

b. when is the particle at rest in the first 10 seconds?

c. Find the total distance traveled during the first 10 seconds by drawing a path of the motion.

Thank you!!