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Select the correct statement. For a part...

Select the correct statement. For a particle moving on a straight line

A

Average speed is equal to magnitude of average velocity

B

Average speed may be greater than magnitude of average velocity

C

Average velocity = instantaneous velocity if velocity is constant

D

Moving with constant acceleration, average velocity for given time interval is arithmetic mean of initial and final velocity

Text Solution

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The correct Answer is:
B, C, D
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Knowledge Check

  • For a particle moving in a straight line

    A
    If velocity is negative and acceleration is positive then speed increases.
    B
    if velocity is positive and acceleration is negative then speed decreases.
    C
    if velocity is zero at an instant then acceleration must also be zero at that instant.
    D
    it is possible that speed of a particle is never zero in an interval of time, but average speed is zero.

  • Mark the correct statement for a particle going on a straight line :

    A
    It the velocity and acceleration have opposite sign, the object is slowing down.
    B
    If the position and velocity have opposite sign, the particle is moving towards the origin.
    C
    If the velocity is zero at an instant, the acceleration should also be zero at that instant.
    D
    If the velocity is zero for a time interval, the acceleration is zero at any instant within the time interval.

  • Choose the correct statement for a particle going on a straight line.

    A
    If the position and velocity are in opposite direction, the particle is moving towards the origin
    B
    If the acceleration and velocity are in opposite direction. The particle is slowing down
    C
    If the velocity is zero for a time interval the acceleration is zero at any moment within that time interval
    D
    If the velocity is zero at any instant, then the acceleration must be zero at that instant .