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8:28 AM 9% flipitphysics.com Search: Hall Cannot Op.. calculator... Homew...Car Is Trav... Car Is Trav... plane flies... calculus- Sunday, February 4 6 FlipltPhysics maomillan learning Physics 4A Spring 2018 Fresno State Problems Homework: Relative And Circular Motion t Print Assignment View until Sunday, February 4 at 8:00 AM Train Ride Tipler6 3.P.058. Cruise 1) To boat landings are 2 km apart on the same bank ofstream, that flows at 2 km/h. A motorboat makes the round trip between the two landings in 50 minutes. what is the speed of the boat relative to the water? Plane Ride 25 Plane Ride 2 Rescue Car on c Car on Curve 2 Tipler6 3.P.016 Tipler6 3.P.OS5 Tipler6 3.P.058 Tipler6 3.P.111 Copyright © 2018 Freeman worth Publishers-a dimion of Macmillan Learning About I Tech Support Find Your Local Sales Rep Terms Of Use I Privacy Polkcy mac learn

Explanation / Answer

Let the speed be v km/hr

While going upstream, net speed is: (v-2) km/hr

While coming downstream, net speed is: (v+2) km/hr

Time = Distance/ speed

So, 2 / (v-2) + 2 /(v+2) = 50 /60 hours

So, 2v +4 +2v - 4 = 5/6 x (v^2 -4)

24v = 5v^2 - 20

5v^2 - 24v - 20 = 0

v = 3.7, 1 Km/hour

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