An object falls a distance s given as s=16t^2. WHAT is the change of in distance, pr distance travelled, from t=3 and t=5? What is the average rate of change of distance compared to time inthat time interval? What is the average speed in that time interval? Please help. I did values between t=4 and t=4.1 and instantaneous speed was approaching 128. That was the example in the book. Yet when i tried to do values between 3 and 3.1. my answer is way off. WHat is the problem asking me for? ie when t=3; s=16x9=144 when t=3.1; s=16x9.61=153.76 then, 153.76-144=9.76/.1= 97.6 what am I doing wrong?