A particle moves on a line away from its initial position so that after t hours it is s = 4t^2 + t miles from its initial position. Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.

Answer 1

calc question? LOL

s(4) = 4*16 + 4 = 68 miles
s(1) = 5 miles

distance traveled = 63 miles
time = 4 - 1 = 3 hours

av speed = 63/3 = 21 miles/hour