Circular Motion: Velocity Vector
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Questions and Answers

If a particle moves in a circle describing equal angles in equal intervals of time, then the velocity vector is

  • Remains constant
  • Change in magnitude
  • Change direction (correct)
  • Change both in magnitude and direction
  • A car is moving along a straight line, say OP in figure. It moves from O to P in 18s and return from P to Q in 6s .What are the average velocity and average speed of the car in going from O to P and back to Q ?

  • 10 m/s,20 m/s (correct)
  • 20 m/s,10 m/s
  • 10 m/s,10 m/s
  • 20,20 m/s
  • A body is projected vertically up with velocity u .its velocity at half of its maximum height is

  • u/√2 (correct)
  • u/2
  • u/√6
  • 2u
  • The acceleration a of a particle moving in straight line varies with its displacement S as a= 2S the. The velocity of the particle is zero at zero displacement the corresponding velocity displacement equation is

    <p>u=±√8S</p> Signup and view all the answers

    (one or more options are correct). A body is projected vertically up with a velocity 'u' from ground in the absence of air resistance'R' .Then

    <p>Ta=u/g</p> Signup and view all the answers

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