opps sorry - i have tried it - many times!?
okay... i tried making up different formulas and substituting them into each other such as:
d1=(Vs-Vc)(900s)
d2=(Vs+Vc)t
d1=d2 (for the time before she gets back to the bridge)
900Vs-900Vc=Vst+Vct
and then i didn't know where to go from there...
Hey, I'm practising some exam review questions that i was given but i can't figure this one out
A sunbather, drifting downstream on a raft, dives off the raft just as it passes under a briidge and swims against the current for 15 mins. She then turns and swims downstream, making the same...