Define velocity and write its si unit and expression. Who can you change the velocity of an object????
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Velocity is defined as displacement per unit time.
It's unit is m/s. It is a vector quantity as it has to be specified by magnitude and direction.
Speed is always positive but velocity can be zero, negative or positive.
Velocity can be changed by:
Increasing or decresing acceleration .
Or by applying Force.
Hope it helps :)
Velocity is defined as displacement per unit time.
It's unit is m/s. It is a vector quantity as it has to be specified by magnitude and direction.
Speed is always positive but velocity can be zero, negative or positive.
Velocity can be changed by:
Increasing or decresing acceleration .
Or by applying Force.
Hope it helps :)
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