please answer these and show step by step explanation( with words too)

Jason Acham x The Pickle Pro x My Pitt | All C X Course Modu x | Week 3: Slide x LON-CAPA av X G Book flig G homework2.math.pitt.edu/res/pitt/athanas/avgvelocity-2.problem?symb=uploaded%2fpitt%2/16145597ace286173pittmath2 Jason Achampong v (Student - section: 15270) 2221_15270 MATH 0220 ANALYTC GEOMETRY & CALCULUS Main Menu Contents Grades Course Contents > ... > PROBLEM SET 3 > avgvelocity-2 The position (in meters) of a particle moving along a straight line is given by s ( t ) = 3t -6 t + 19, where t is measured in seconds. What is the average velocity on the interval [5, 5+h]? Mathematically, simplify 5 (5 + h) - s (5) Submit Answer Unable to understand formula. ) Tries 2/8 Previous Tries Using your answer above, what is the average velocity on each of the given time intervals? [4.9, 5 ] [5, 5.1 ] [4.999, 5 ] [5, 5.001 ] Submit Answer Tries 0/8 What is the instantaneous velocity at time t = 5 seconds? That is, determine lim s(5 + h)-5(5) h - 0 Submit Answer Tries 0/8 Post Discussion