PhysicsThe displacement-time graph for two particles A and B are straight lines inclined at angles of 30o and 60o with the time axis. The ratio of their velocities is

The displacement-time graph for two particles A and B are straight lines inclined at angles of 30o and 60o with the time axis. The ratio of their velocities is


  1. A
    1:2
  2. B
    1:3
  3. C
    3:1 
  4. D
    1:3 

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    Solution:

    The displacement-time graph for two particles A and B are straight lines inclined at angles of 30o and 60o with the time axis. The ratio of their velocities is 1:3 . Let vA  and  vB be the velocity of particles A and B respectively. So vA : vB=SlopeA:SlopeB Also, SlopeA:SlopeB=tan30°:tan60   =>vA : vB=tan30°:tan60°   =>vA : vB=13 : 3   =>vA : vB=1:3  

    Also Check

    1. Displacement Formula
    2. Average Velocity Formula


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