### Home > CALC > Chapter 10 > Lesson 10.4.1 > Problem 10-139

10-139.

Meg and Jack are racing their frogs Dwayne and Jerry.

If Dwayne’s velocity in feet per second during the race is given by the equation

*v*(*t*) = –0.5(*t*+ 2sin*t*– 11)^{2}+ 6.05, determine Dwayne’s average velocity during 0 ≤*t*≤ 18. Describe your method.If Jerry’s distance from the starting line during the race is given by the equation

*s*(*t*) = 1.5*x*+ 0.2sin*x*^{2}, determine Jerry’s average velocity during 0 ≤*t*≤ 18. Describe your method.When is each frog traveling at his/her average velocity?

Use a calculator to evaluate this integral.

In this case, average velocity is total distance divided by total time.