At time t in seconds, a particle’s distance s⁢(t), in centimeters, from a point is given by s⁢(t)=13sin⁢ t+40. what is the average velocity of the particle from t⁢= π3 to t⁢= 13π3?

Explanation:

Given

distance

at

at

Average velocity is change in position w.r.t time

the part of the wave he is travelling on is the crest

snell's law

refractve index = sin incidence / sin refraction