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rajan jha Grade: 12
        

Two points A and B start simultaneously along the line joining them in the same direction with acceleration of 1m/s2 and 2m/s2 and speed 3m/s and 1m/s respectively. Initially A is 10m behind B. What is the minimum distance between them?

6 years ago

Answers : (1)

vikas askiitian expert
510 Points
										

both particle move relative to each other but after some time velocity of both particle will become equal for a instant..


.after this instant they will never come closer to each other....


Uab =2m/s        ( relative velocity of A wrt B)


Aab=-1m/s^2     (relative accleration of A wrt B)


V= u+at


Vab =0     ( finally)


t=2sec


this is the time when separation between them is minimum.......


distance travelled by first particle during this time is S1=2*3 +2=8m


distance travelled by second particle during this time is S2=2*1+4=6m


total relative displacement is 10 + 6-8 =8m


therefore minimum distance bw them will be 8m

6 years ago
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