Module 2: Exemplary Level (2 marks) 8) A swimmer wants to end up at a dock due north of her starting point on the south side. In still water her maximum speed is 1.25 m/s. The river has a current flowing 0.55 m/s [E]. dock 0.55 mls CE] 1. 25 m / s CN ] current 300 m start It land? starting point a. Calculate the direction that she must aim herself through the water to arrive at the dock. Given ! Ad = 300 m Required! V starting point for direction find angle "' swimmer : 1. 25 m/ s 0:55 m/s [ E] + (N) are positive current : 0. 55 mls 1. 25 m 16 sino = opp sing = 0.55 m / s hyp 1:25 mls B = Sin-1 /0,5 smls To arrive at the dock the swimmer - 1.25 mls 0 = 26 W ofN must go 26 ' wot N. to b. What time will it take her to cross the 300 m wide river? Gwen; Ad : 300 m Required : AT V swimmer = 1.25 mls V current = 015 5 mils V AT