Marks will be deducted for poor form / notation. 1. [6 marks] Suppose the position of a train along a set of straight train tracks at time t is given by s(t) = 100 where t is measured in hours and s(t) is measured in kilometers. (a) What is the train's average velocity over the given time interval? Include units in your answer. Note that average v s(6) - s(a) velocity over an interval [a, b] is given by b - a (b) Use the limit definition of a derivative to find the instantaneous velocity of the train at t = 2; i.e. evaluate lim s ( 2 + h) - s (2 ) . Include units in your answer. h -+0 h 1 12 lect in ePortfolio Download Print