Question

A car manufacturer advertises that the brakes are so perfect that when applied, the car would stop instantaneously. Comment on this.

Answer 1

This is not possible.
We know that change in momentum = Impulse = Force * Δtime
Now if the car was to stop instantaneously, Δt  = 0, which means the force will have to be ∞ to cause the required change in momentum. To create ∞ force is not possible

Answer 2

Answer:

It is not possible because to a stop car in a time interval zero and infinite deceleration is needed which is impossible

I hope it's helpful for you

and follow me