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Your Questions About Assorted Riveboat Cruises

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Donald asks…

I am going on a riverboat cruise with my wife for her birthday and I have no idea what to wear?

We are going August 15, on the Ohio River, but I have no idea how to dress on these things, is it super dressy? or just dress slacks and a shirt? or just normal? Any suggestions would be greatly appreciated!

John answers:

People will generally dress as they would when going out for dinner at a good restaurant or dinner theater.  In cruise terms, it would be similar to a non-formal night on a cruise ship.  You’ll be fine with a nice blazer, collared shirt (no tie), dress slacks and dress shoes.  You’ll probably find many of your fellow guests dressed more casually and a few others in ties, but you’ll strike a nice balance dressed as I mentioned.  Your wife can then choose an appropriate outfit based on your clothes.

Sandy asks…

on a riverboat cruise, a plastic bottle is accidentally dropped overboard. A passenger on the boat estimates the speed as follows:

on a riverboat cruise, a plastic bottle is accidentally dropped overboard. A passenger on the boat estimate that the boat pulls ahead of the bottle by 5 meters each seconds. Is it possible to conclude that the boat is moving at 5 m/s with respect to shore? Account your answer

PLEASE SHOW WORKS AND THANK YOU FOR YOUR HELP!!

John answers:

Well, Sandy, this is a bit out of our normal sphere.

This answer is no.  This is an example of relative motion.  The riverboat is moving relative to the bottle.  Both are in the same medium (water).  To determine the boat’s speed with respect to shore you need to estimate the bottle’s speed with respect to the shore as it has no propulsion.

In other words, the only data you have is the estimated speed of the riverboat relative to that of the  bottle. To establish the speed of the boat with respect to the shore, you would need to know the speed of the river (or bottle , in this case) first.  Then you can add the boat’s relative speed (5 meters per second in your example) to that of the river to get the riverboat’s estimated speed with respect to the shore.

Now, here’s one for you Sandy.  If two trains are traveling in opposite directions….

George asks…

Portugal and Spain riverboat cruise?

Portugal and Spain riverboat cruise – Have you ever experienced this cruise, or do you know of any small groups forming that will be traveling in Portugal and Spain… I am searching to join a group and traveling next summer!

John answers:

I took a Uniworld riverboat cruise on the Douro River, through the port wine region of Portugal.  The tour started in Lisbon and included a tour of Lisbon, then bus to Oporto.  I spent 7 nights on a river boat and then returned to Oporto for my flight home.

As part of the cruise we visited Salamanca, Spain.  I enjoyed the trip very much.

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