Assertion : Retardation is directly opposite | vedclass

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(A) Retardation is defined as the negative acceleration,which means the acceleration vector is directed opposite to the velocity vector. This causes a

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If both $Assertion$ and $Reason$ are correct and the $Reason$ is a correct explanation of the $Assertion$.

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(A) Retardation is defined as the negative acceleration,which means the acceleration vector is directed opposite to the velocity vector. This causes a decrease in the magnitude of velocity (speed) over time. The $Assertion$ is correct because retardation,by definition,acts in the direction opposite to the velocity to reduce it. The $Reason$ is also correct because retardation is indeed the time rate of decrease of speed. Since the decrease in speed is caused by the acceleration acting opposite to the velocity,the $Reason$ correctly explains why retardation is defined as it is in the $Assertion$.

$Assertion$ : Retardation is directly opposite to the velocity.
$Reason$ : Retardation is equal to the time rate of decrease of speed.

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$Assertion$ : Retardation is directly opposite to the velocity. $Reason$ : Retardation is equal to the time rate of decrease of speed.