2007-02-01 10:57:39 · 5 answers · asked by sakinah_123 1 in Science & Mathematics ➔ Physics
in a river flowing 6.0km/h
2007-02-01 11:02:55 · update #1
if the boat can achieve 30km/hr in still water,the push back against it of 6km/hr will result in a 24 km/hr forward speed so go get 12km will take a half an hour...
2007-02-01 11:07:50 · answer #1 · answered by Anonymous · 0⤊ 0⤋
in one direction that's further to boat's speed, in the different the present and boat combat. the version in distance is 13 km. without present day, the holiday distances could be comparable, (7+6.5) = (20-6.5). If the boat grew to become into no longer below means, it may glide downstream the 6.5Km in the time it took to do one leg of the holiday. what isn't mentioned on your question is what proportion hours to make that 6.5Km distance. only then can the value of the present be figured.
2016-11-23 21:37:23 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Flowing 6.0 what? We need the units.
2007-02-01 11:00:43 · answer #3 · answered by Kirstin 2 · 0⤊ 0⤋
v=d/t
24 km/h=12 km/h
solve from there.
(i think atleast, forgot that first unit of grade 11 physics :P)
2007-02-01 11:02:26 · answer #4 · answered by Anonymous · 0⤊ 0⤋
upstream means subtract the current from the water speed to get the speed over ground.
Divide your distance by that speed over ground to get the time.
2007-02-01 11:01:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋