A boat is traveling upstream at 14 mph with respect to a river that is flowing at 6 mph (with respect to the ground). A man runs directly across the boat, from one side to the other, at 6 mph (with respect to the boat). The speed of the man with respect to the ground is:
a. 10 mph
b. 14 mph
c. 18.5 mph
d. 21 mph
e. 26 mph
2007-02-12 06:07:49 · 3 answers · asked by el tuani 1 in Science & Mathematics ➔ Physics
This is not a physics problem but one of math. and this simple task you can for sure solve by yourself. None of your choices is right.
2007-02-12 06:12:23 · answer #1 · answered by jhstha 4 · 0⤊ 3⤋
The speed of the boat with respect to the ground is 14-6 = 8mph the man is running at 6mph across the river. These two speeds make a triangle with 6 and 8 being the legs. The hypotenuse is 10. So the man is running at 10mph.
2007-02-12 06:16:43 · answer #2 · answered by rscanner 6 · 2⤊ 2⤋
the galaxies rotate at speeds inconsistent with their obvious mass is on account that we do see it all. I am regarding it as being the theoretical Dark Matter. There are very robust proofs that suggests that darkish topic exist. One the is the inconsistent velocity of and obvious mass. darkish topic makes up approximately seventy five% to eighty% of the problem within the Universe...
2016-09-05 07:46:39 · answer #3 · answered by greenland 4 · 0⤊ 0⤋