write short notes on uniform deceleration ?? if u answer this you will get 15 points
Answers
Hi,here is a short note on uniform declaration:
Acceleration can be defined as the time rate of change of velocity .
Acceleration (a) = change in velocity/Time Taken
⇒ a =(v − u)/t
Also,
F=ma and
a=F/m
A body is accelerated only if net external force acts on the body. And the acceleration produced in inversely proportional to mass.
Based on the direction of velocity it can be positive or negative. When both act in the same direction then it is said as positive or the velocity of the body increases. Like if I press accelerator pedal of the vehicle the velocity increases. Similarly when they act in opposite directions the acceleration is said to be negative or the velocity decreases. Example is, braking pedal of a vehicle when we press it the velocity decreases.
There is another classification for it that is uniform and non – uniform. If the acceleration remains constant for a given interval of time it is said to be uniform while if it changes it is said to be non – uniform. When it is uniform, we can use equations of motion. We should keep in mind that these equations can’t be used when a body is accelerated non uniformly. The rate of acceleration is constant.
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