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A particle moving along positive x-axis with a speed of 5m/s suddenly changes its direction along the positive y-axis with the same speed.The change in velocity of the particle is what?        (In these type of qstns i am unable to determine the resultant direction of the particle.Can u suggest a simple way of determining it.)

6 years ago


Answers : (1)


Dear Chandan das

here you should see what is initial and final velocity.

initial velocity = 5i

final velcity  = 5j


so change in velocity = (final -inital)


   and for magitude = |5j-5i|


resultant direction is changes with respect to time.

 suppose for t1 sec it moves in x direction and then for t2 sec it moves in the y direction so



so resultant direction = tanΘ=y/x = 5t2/5t1


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