$A$ car manufacturer advertises that the brakes are so perfect that the car stops instantaneously. Comment.
(N/A) The claim made by the manufacturer is scientifically incorrect.
If a car stops instantaneously,the time taken $(t)$ for the change in velocity would be $0$.
According to the formula for acceleration $(a = \frac{v - u}{t})$,if $t = 0$,the acceleration (or retardation) becomes infinite $(a = \infty)$.
In physical reality,it is impossible for any object to experience infinite acceleration or retardation,as it would require an infinite amount of force.
If a car stops instantaneously,the time taken $(t)$ for the change in velocity would be $0$.
According to the formula for acceleration $(a = \frac{v - u}{t})$,if $t = 0$,the acceleration (or retardation) becomes infinite $(a = \infty)$.
In physical reality,it is impossible for any object to experience infinite acceleration or retardation,as it would require an infinite amount of force.
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