plz answer my question

a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10 km/h in still water and heads out from one bank. a marina is directly across the river, on the opposite bank. if the motorboat heads directly toward the marina, how far downstream from the marina will be on the other bank? USING VECTOR COMPONENTS

. It takes 2/10 hours to cross the river. In that time, the boat drifts downstream 2/10*4 = 4/5 km. is that right

Now, if i want to find the heading needed to get straight across the river, then i need some vectors. but how am i support

Question

plz answer my question







a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10 km/h in still water and heads out from one bank. a marina is directly across the river, on the opposite bank. if the motorboat heads directly toward the marina, how far downstream from the marina will be on the other bank? USING VECTOR COMPONENTS

. It takes 2/10 hours to cross the river. In that time, the boat drifts downstream 2/10*4 = 4/5 km. is that right 

Now, if i want to find the heading needed to get straight across the river, then i need some vectors. but how am i support

anonymous · Answer

I think its  1/3

anonymous · Answer

the speed vector will be 6 KM /h

anonymous · Answer

how did you got it?

anonymous · Answer

its been a while since I did some vectors  but if I remebered correctly you subtract the speed as vectors then

anonymous · Answer

calculate how long will take it take to cross  finding the direction

anonymous · Answer

using the same calculation

anonymous · Answer

I could be wrong Im not 100% sure but I m trying

anonymous · Answer

OK i will help you baby!!

anonymous · Answer

i got 0.2 h with a distance of 0.8 km downstream

anonymous · Answer

1/3 * 6 = 2 KM

anonymous · Answer

OK this is pretty much a great answer