anonymous
  • anonymous
A motor boat is rising towards N at 25 Km/hr and the water current in that region is 10 km /hr in the direction of 60° east of south . Find the resultant velocity of the boat .
Physics
schrodinger
  • schrodinger
See more answers at brainly.com
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

anonymous
  • anonymous
@waterineyes you know this sum ?
anonymous
  • anonymous
I don't...
anonymous
  • anonymous
you know some one in open study who can help me ?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
I think @sauravshakya can help you here..
anonymous
  • anonymous
i sent him a msg .. no reply :/
anonymous
  • anonymous
But he is online.. Let me try..
anonymous
  • anonymous
okay !
anonymous
  • anonymous
Which chapter is this ??
anonymous
  • anonymous
motion in a plane.
anonymous
  • anonymous
Yeah I think you will get help here..
anonymous
  • anonymous
thanks waterineyes :)
anonymous
  • anonymous
@rsadhvika do you know how to solve this ??
anonymous
  • anonymous
|dw:1344771481322:dw|
anonymous
  • anonymous
Here A and B are the vectors.. A is representing the boat and B is representing Water...
anonymous
  • anonymous
okay .. understood !
anonymous
  • anonymous
Now We have to find Resultant first.. For that we first make our figure look like parallelogram..
anonymous
  • anonymous
okay
anonymous
  • anonymous
Wait I draw the figure more clearly for you..
anonymous
  • anonymous
its okay .. i can understand :)
anonymous
  • anonymous
|dw:1344771854805:dw|
anonymous
  • anonymous
|dw:1344771963782:dw|
anonymous
  • anonymous
is that the parellelogram we need ?
anonymous
  • anonymous
Now make it look like parallelogram: |dw:1344771989674:dw| Getting this ??
anonymous
  • anonymous
yeah got it !
anonymous
  • anonymous
Now can you draw diagonal of the parallelogram ??
anonymous
  • anonymous
|dw:1344772085729:dw|
anonymous
  • anonymous
wrong ?
anonymous
  • anonymous
Great.. This is the resultant of A and B vector..
anonymous
  • anonymous
okay :)
anonymous
  • anonymous
what is theta here ?
anonymous
  • anonymous
You must mention the direction also..
anonymous
  • anonymous
what direction ? direction of vector ?
anonymous
  • anonymous
|dw:1344772213529:dw|
anonymous
  • anonymous
okay !
anonymous
  • anonymous
Since boat has higher velocity then boat will go in upward direction.. Getting ??
anonymous
  • anonymous
yeah ..and if lower velocity , down ?
anonymous
  • anonymous
Yeah that will depend upon velocity of water..
anonymous
  • anonymous
okay !
anonymous
  • anonymous
Have you studied about the formula: \[Resultant (R)= \sqrt{A^2 + B^2 + 2AB \cos(\theta)}\]
anonymous
  • anonymous
yeah i have !
anonymous
  • anonymous
Here A is just velocity of boat that is : 25 and B is just velocity of water that is : 10 But you have to find theta first.. Right ??
anonymous
  • anonymous
yeah .. how do we find theta ?
anonymous
  • anonymous
Theta is basically angle between the two vectors A and B.. Here what is the angle between A and B.. Can you locate on the drawing ??
anonymous
  • anonymous
|dw:1344772636899:dw|
anonymous
  • anonymous
i don't know !
anonymous
  • anonymous
|dw:1344772698399:dw|
anonymous
  • anonymous
That is the angle between A and the resultant.. We have to locate angle between A and B..
anonymous
  • anonymous
Don't worry @ashna I draw it..
anonymous
  • anonymous
okay !
anonymous
  • anonymous
|dw:1344772809427:dw| Getting?? That is the angle between A and B..
anonymous
  • anonymous
yeah !
anonymous
  • anonymous
Can you find its value ??
anonymous
  • anonymous
Make a try..
anonymous
  • anonymous
180 - 60 ?
anonymous
  • anonymous
120 ?
anonymous
  • anonymous
Great.. A medal for you..
anonymous
  • anonymous
:)
anonymous
  • anonymous
Can you tell cos(120) = ??
anonymous
  • anonymous
yea .. cos (90+30) - sin 30 - 1/2 correct ?
anonymous
  • anonymous
I wish I could give you more medals.. Yes that is very correct.. Now can you use that formula ??
anonymous
  • anonymous
okay i'll try !
anonymous
  • anonymous
There is no need to go fast.. I can wait.. Just take your time and post your answer here..
anonymous
  • anonymous
I think this site is going to be down soon..
anonymous
  • anonymous
If my reply does not come @ashna then don't worry . Just post the answer or doubt here I will check it later on..
anonymous
  • anonymous
What happened @ashna
anonymous
  • anonymous
okay .. now i can type .. some net problem i guess.. sorry for the delay .. i got square root 475 !
anonymous
  • anonymous
91.7945

Looking for something else?

Not the answer you are looking for? Search for more explanations.