jlulu2738
30.03.2020 •
Mathematics
A street is 10 yards wide. You are at the curb at the point A. The point B is directly across the street from you, at the opposite curb, 10 yards from you. The point C is 50 yards down the street from point B, also at the curb across and down the street from you. You want to go from point A to point C as rapidly as possible. You must walk when you are in the street, and your walking pace is 2 yards per second. But you can run when you are on the sidewalk --- the line between points B and C --- and your running pace is 4 yards per second. One possibility is to cross the street orthogonally from A to B (walking) and then run down the sidewalk from B to C. Another possibility is to slant across the street on a straight line from A to C, though you must walk the entire way. (Don't worry about traffic; there are no cars coming to interfere with your crossing. Still, you must walk when in the street.) Then an idea occurs to you: You could walk from A to a point D on the opposite side of the street, with D somewhere in between B and C. Then you can run the rest of the way from D to C. Does this idea allow you to save time, compared with the two possibilities in the first paragraph
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Ответ:
There is time saving with this idea
Step-by-step explanation:
Ответ:
The description of the given scenario is explained below.
Step-by-step explanation:
Mathematics language may be mastered, although demands or needs the requisite attempts to understand every language other than English. The mathematics makes it so much easier for mathematicians to convey the kinds of opinions they want. It is as follows:
Precise: capable of making very fine marks. Concise: capable of doing something very briefly. Powerful: capable of voicing intelligent concepts with minimal effort.