A physical quantity x is defined as rate of change of velocity.Write the name X.Writenits SI unit.When is the value of x take as positive or negitive
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rate of change of velocity is acceleration
acceleration=final velocity-initial velocity÷time
si unit is metre per seconds squared
(ms^-2/m/s^2)
when acceleration is negative it is retardation or deceleration
acceleration=final velocity-initial velocity÷time
si unit is metre per seconds squared
(ms^-2/m/s^2)
when acceleration is negative it is retardation or deceleration
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