Find the magnitude of the movement and the distance traveled

Find the magnitude of the movement and the distance traveled of the particle in the interval of 6 to 10 s

Solution

ANS:
click on the below links...got the ans...

https://en.wikipedia.org/wiki/Angular_displacement

http://faculty.ucmerced.edu/dkiley/Physics8Spring2012Quiz3solns.pdf

http://www.regentsprep.org/regents/math/algtrig/atm1/arclengthlesson.htm