There are four dogs/ants/people at four corners of a square
of unit distance. At the same instant all of them start
running with unit speed towards the person on their
clockwise direction and will always run towards that target.
How long does it take for them to meet and where?
- 8 Answers
- 30492 Views
- Microsoft, Panasonic, I also Faced
- E-Mail Answers
Answer Posted / tarun
The reason previous answer is wrong is because at any given
point of time they are not moving along the diagonal of the
square. They end up traversing a quarter-circular arc - this
can be verified by looking at the tangents on the four
circular arcs at any given point of time and they will show
how each ant is moving instantaneously in a straight line in
the direction of its neighbor. Therefore the total distance
covered is 1/4(2*pi*r) where r=1, or pi/2, and so the total
time taken is also pi/2 units.
| Is This Answer Correct ? | 3 Yes | 23 No |
Post New Answer View All Answers
PROCESS FLOW IN LOGISTICS
The time showed by the clock at a moment is 8 am then the respective time of after and before 42896 hours is :
If a car starts from A towards B with some velocity due to some problem in the engine after travelling 30km.If the car goes with 4/5 th of its actual velocity the car reaches B 45min later to the actual time. If the car engine fails after travelling 45km, the car reaches the destination B 36min late to the actual time , what is the initial velocity of car and what is the distance between A and B in km
The average of 13 papers is 40. The average of the first 7 papers is 42 and of the last seven papers is 35. Find the marks obtained in the 7th paper?
f(X)= 2X-1 + f(X-1) if X is not equal to zeroandiff(X=0)=0, If f(X)-f(X-1)=f(X-8) for X>5 then X= ?
A cloth merchant claims to sell is material at cost price but uses a scale which reads 1 meter for every 95 centimeter. Find the gain percent?
The sum of the series 1 + 1(1+1/n) + 3(1+1/n)2 + ..... is equal to?
the program requires 4000(n)1/2 [ie square root of n].if size of program was increased by 1% then calculate the percentage change in size of program.
If the data is for 10 bogies and for every 2 bogies added speed decreases by 5% what will be the speed after 5 hrs.
Why do we buy you?
Two trains are traveling in 60 kmph on same trace, towards each other. When the distance between them is 18 km, a fly is going to start, flying between them in 80 kmph speed. Find the traveling path distance of the fly upto when it is going to crush by the 2 trains?
The day before yesterday was WEDNESDAY then the day after 2morrow is?
box 1 cotain odd value X or Y the box 2 =X i.e 7 or 12 box 3= Y has value 19 if X is 7 or 31 if x is 12 get even value X or Y Use any operator steps allowed 3
Two persons start at the same point, walk in opposite directions with 5km/hr and 5.5km/hr respectively. What is the distance separated after 2 and half hrs?
A hotel has two,the east wing and the west wing.some east wing rooms but not all have an ocean view(OV).All WW have a harbour view(HV).The charge for all rooms is identical, except as follows * Extra charge for all HV rooms on or above the 3rd floor * Extra charge for all OV rooms except those without balcony * Extra charge for some HV rooms on the first two floor&some EW rooms without OV but having kitchen facilities.
