Question

S = 6t² + 3t + 7, 0 ≤ t ≤ 2 Find the body's displacement and average velocity for the given time interval. *

A) 30 m, 30 m/sec
B) 44 m, 22 m/s
C) 18 m / sec , 27 m /sec
D) 30 m / sec , 15 m /sec

Answer 1

no choice

use calculus to find vav

s'=v=12t+3

v(0)=3

v(2)=27

so vav=(27-3)/2

vav=12