$A$ 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.
Explore More
Similar Questions
$A$ body projected horizontally moves with the same horizontal velocity although it is under the action of the force of gravity,why?
Medium
View SolutionCan there be displacement of an object in the absence of any force acting on it?
Medium
View SolutionAn athlete always runs some distance before taking a jump. Why?
Easy
View Solution$(i)$ Name the property by virtue of which a body resists a change in its state of motion. Name the physical quantity which is a measure of this property.
$(ii)$ Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.
$(ii)$ Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.
Medium
View SolutionAn object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes,state the conditions that must be placed on the magnitude and direction of the velocity. If no,provide a reason.
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo