Question

The displacement (in meters) of a particle moving in a straight line is given by s = 2 t^3 where t is measured in seconds. How do you find the average velocity of the particle over the time interval [ 5 , 7]?

Answer 1

`218 m/s`

Explanation:

all we need for average velocity is

`vec v_(ave) = (Delta vec s)/(Delta t)]_(t = 5)^(7)`

`= (2(7^3 - 5^3))/(7-5) = 218 m/s`