Question

Given the position s = -t^3+3t^2-3t of a body moving on a corrdinate line for 0<=t<=3, with s in meters and t in seconds, find the body's displacement and average velocity for the time interval.

Answer 1

hey, is it physics?

Answer 2

whatever, for body's displacement, just plug t =0 and t = 3 and subtract them to get displacement,.
for average velocity, take derivative of s and plug t =3 and t =0 and subtract them /2