Home » Ask & Discuss » Physics. » Mechanics « Back to Discussion

Mechanics

Cool goIITian

Joined:	4 Jun 2007
Post:	44

24 Aug 2007 18:35:41 IST

0 People liked this

566

relative velocity!!!!!!

None

TWO TRAINS,EACH HAVING SPEED OF 34KM/HR, ARE HEADED TOWARDS EACH OTHER ON SAME STRAIGHT TRACK.ABIRD THAT CAN FLY 58KM/HR ,FLIES OFF THE FRONT OF ONE TRAIN WHEN THEY ARE 102 KM APART AND HEADS DIRECTLY FOR THE OTHER TRAIN. ON REACHING THE OTHER TRAIN IT FLIES BACK TO FIRST TRAIN AND SO FORTH.(A)HOW MANY TRIPS CAN THE BIRD MAKE FROM ONE TRAIN TO OTHER BEFORE COLLISSION? (B)WHAT IS THE TOTAL DISTANCE THE BIRD TRAVELS?

Share this article on:

Comments (1)

paris mulye

Hot goIITian

Joined: 19 Jun 2007

Posts: 143

30 Aug 2007 10:27:22 IST

Like 1 people liked this

distance travelled by the bird=time * speed
time taken by the trains to meet each other =time for which the bird has travelled
102/(34+34)=102/68
distance=102/68*58
we can visualise that the the distance between the trains will go on decreasing if we create an equation we will get x^n*102
when the distance in zero we will get 0=(x^n)*102
answer to this is n = infinity

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team