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The speed is zero when an object is at rest or not moving. This can occur at any point during an object's motion when it changes direction or comes to a stop.

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1y ago

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Can particle have zero speed and non zero velocity?

No, a particle cannot have zero speed and non-zero velocity simultaneously. Speed is the magnitude of velocity and if speed is zero, then velocity must also be zero.


Can an accelerating object have zero speed?

No, an accelerating object cannot have zero speed. Acceleration is the rate at which the speed of an object changes over time. If an object is accelerating, its speed is increasing or decreasing, but it cannot be zero.


Is it possible to have a situation in which the speed of a particle is always zero but the average speed is not zero?

Yes, it is possible. For example, if a particle moves back and forth between two points with different speeds, such that the time spent at each point is unequal, the average speed would not be zero even though the particle's speed is zero at each point.


Can the average speed of a body be zero and can the average velocity of a moving body be zero?

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.


Describe the motion of a bus whose accelaration is zero but the speed is not zero?

It is slowing down. The bus is not picking up speed--accelerating--and its speed isn't zero, as it is not completely stopped. ------------------------------------------------------------------------------------------------------------ The above answer is incorrect as slowing down indicates a negative acceleration not a zero one. The correct answer is that the bus is at a constant speed - any constant speed.


If you flip a coin does its speed ever become zero?

When the coin is at its highest, its speed becomes zero for a 100th of a second.


Is it possible in straight line motion particle have 0 speed and a non-zero velocity .explain?

Sounds like a trick question. The answer is no. Speed is a scalar with magnitude only and velocity is a vector with magnitude (speed) and direction. So If traveling with velocity in a straight line it has speed..


Is the speed of molecules at absolute zero temperature becomes double?

No, the speed of molecules at absolute zero temperature is zero. This is because at absolute zero, there is no thermal energy present to cause the molecules to move.


Why velocity may be zero but speed cannot be zero?

Velocity is a vector quantity that includes both magnitude (speed) and direction. Thus, velocity can be zero if there is no motion, but speed is the magnitude of velocity and cannot be negative. Speed is always a positive scalar quantity, so it cannot be zero if there is any motion at all.


What is the speed of an echo?

actually an echo does not have any speed . it travels at zero speed


Is your speed is constant if you are traveling in a straight line with an acceleration of zero?

If your acceleration is zero, then yes, you are traveling at a constant speed. The path does not matter. Acceleration measures the change in velocity, so an acceleration of zero means that there is zero change in velocity and therefore the speed is constant.


When an object is at rest what is speed?

0 m/s

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