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Ashmit Sinha
May 18, 2015
Syeda
SPEED | VELOCITY | |
1. | It is defined as the rate of change of distance. | It is defined as the rate of change of displacement. |
2. | It is a scalar quantity. | It is a vector quantity. |
3. | It can never be negative or zero. | It can be negative,zero or posituve. |
4. | Speed is velocity without direction. | Velocity is directed speed. |
Amarnathreddy M
S.No. | SPEED | VELOCITY |
1. | It is defined as the rate of change of distance. | It is defined as the rate of change of displacement. |
2. | It is a scalar quantity. | It is a vector quantity. |
3. | It can never be negative or zero. | It can be negative,zero or posituve. |
4. | Speed is velocity without direction. | Velocity is directed speed. |
5. | Speed may or may not be equal to velocity. | A body may possess different velocities but the same speed. |
6. | Speed never decreases with time. For a moving body, it is never zero. | Velocity can decrease with time. For a moving body , it can be zero. |
7. | Speed in SI is measured in ms^{-1} | Velocity in SI, is measured in ms^{-1} |
Parthasaradhi M
Member since Apr 1, 2017
Differences between velocity and speed:
S.No |
Velocity |
Speed |
1 |
Velocity can be defined as the rate of change of position of an object in a certain direction. |
Speed is defined as the rate of change of distance of an object |
2 |
It is a vector quantity |
It is a scalar quantity |
3 |
Velocity can be negative, zero, or positive. |
Speed can never be negative or zero. |
4 |
The velocity of the object changes with the change in direction, therefore the object must follow one direction. |
The average speed will continue to count even if the object changes direction. |
5 |
Velocity can decrease or increase with time. |
Speed never decreases with time. |
6 |
An object may possess different velocities but the same speed. |
Speed may or may not be equal to velocity. |
7 |
Velocity is measured in m/s (SI Unit) |
Speed is measured in m/s (SI Unit) |