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2 articles trouvés pour ce sujet.
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What is the average speed? |
2010-09-21 |
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Cindy pose la question :
A boat travels downstream m nautical miles at d knots. It travels upstream m nautical miles at u knots. What is the average speed for the entire trip?
Penny Nom lui répond. |
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A rope trick |
2002-12-05 |
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Jerry pose la question :
My name is Jerry and I am a math teacher at the secondary school level in the greater Toronto area. I posed the following problem to my enriched grade 10 math class that I found in the book called "Mathematics and the Imagination" by William Kastner. According to the author, it is posible for two people linked to each other with two ropes around their hands, to separate themselves without letting go of the rope. The students had lots of fun trying to accomplish this problem using skipping ropes from the Phys Ed department, but with no success.
Penny Nom lui répond. |
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