Physics
Kinematics

# Can the average velocity of a moving body be zero?

91011 ###### 2010-05-26 12:01:42

Yes, if it returns to its starting place, the average velocity for the cycle will be zero. The average SPEED, however, will not be zero.

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## Related Questions Yes; for example, an object moving in a circle. Since speed is a scalar quantity, the only way the average speed can be zero is if the instantaneous speed is at all times zero, making it not a moving body, so no on the average speed. The average velocity, on the other hand, can easily be zero. The simplest example is you running in a circle. An object moving in a circular path at constant speed will have a non-zero average speed and zero average velocity since velocity is a vector parameter, A body at rest and a body in motion have completely different velocities.Magnitude of velocity:At rest . . . zeroMoving . . . not zeroDirection of velocity:At rest . . . no directionMoving . . . some direction A body moving with uniform velocity has zero acceleration. Acceleration is zero when the body is moving with a constant velocity. This is one of the newton's laws. A pendulum could, because it's moving backward as fast as it's moving forward.  Yes, if, for example, a car races around a circuit, its total displacement is zero and so its velocity, at the end of every lap, is zero.   Acceleration is the CHANGE in velocity; you're assuming CONSTANT velocity. So the acceleration is zero.  For an instant, yes - otherwise there would never be any motion. When the object starts moving, it initially has zero velocity. zero because the initial and final velocity is constant . so,difference bet. final velocity and initial velocity is zero A body is moving at constant velocity including zero at Equilibrium Condition, No change of energy or zero force. With force a body can accelerate, move with increasing velocity.  The body is not zero, but the sum of all forces on it is. -- "Uniform velocity" means no acceleration. -- Acceleration is force/mass . -- If acceleration is zero, that's an indication that force must be zero. As long as it has a non-zero velocity, it will have a non-zero momentum. Average velocity is zero if the displacement is zero. Average velocity = Displacement/Time = 0/Time = 0. No, when a body is moving with constant velocity then neither the magnitude nor the direction changes, and that's exactly the definition of zero acceleration. since accelaration is the change in velocity of an object per unit time......if velocity is zero then there is no acceleration.its nt possible When an object is not moving. (Velocity is speed) If you have no velocity, then you aren't moving. An object at rest has a constant velocity of zero. Both the object at rest and the object moving at constant velocity have zero acceleration.

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