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Two particles A and B start from origin ...

Two particles A and B start from origin of a coordinate system towards point P(10,20) and Q (20,10) respectively with speed `5sqrt(5)` each. Both continue their motion for 10 s and then stop. There after particle B moves towards particle A with speed `2sqrt(2)` and after particle B meets particle A, they both return to origin following a straight line path with speed `5sqrt(5)`. Match the items of column-I with suitable item of Column-II.

Text Solution

Verified by Experts

The correct Answer is:
(A)-(Q);(B)-(R);(C)-(T);(D)-(P)
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Knowledge Check

  • A particle is moving on a circular path of radius R with constant speed v. During motion of the particle form point A to point B

    A
    Average speed is v/2
    B
    The magnitude of average velocity is v/`pi`
    C
    The magnitude of average acceleration is `(2v^(2))/(piR)`
    D
    Average velocity is zero.
  • A particle of mass m moving towards the east with speed v collides with another particle of the same mass and same speed v moving towards the north. If the two particles stick to each other, the new particle of mass 2m will have a speed of

    A
    `v`
    B
    `v/2`
    C
    `v/(sqrt2)`
    D
    `vsqrt(2)`
  • Mirror is moving towards the particle with speed 2 cm/sec. Speed of A ad B are 10sqrt(2) and 5 cm/sec respectively in the direction shown in figure. Magnitude of velocity of image of the particle B with respect to image of A.

    A
    `sqrt(325)cm//sec`
    B
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    D
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