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Grade: 11


three particles start moving from the origin at the same time. Particle 1goes in x-direction with velocity 2m/s and 2nd in negative y-direction with 6m/s. find the velocity of the third particle along x= y line so that the three particles may always lie in a straight line

3 years ago

Answers : (1)

24742 Points
Find the distance at any time taken as cinstant suppose take t = 1 s
and then we can caluclate velocity later on.
For x – axis,
x = V1
For y-axis
y = V2
for y=x,
x0 = V3cos45 and y0 = V3sin45
Now U have two points.
(x,y) and (x0 , y0)
Find the eqn. of line using this and find the intersection point with y=x.
You will get V3√2*v2v1/(v2+v1)
hence V3 = 1.414* 6* 2/ (6+2)
= 16.968/8 
= 2.121 m/sec
3 years ago
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