Question

The two cars A and B, having the same mass as m. Car A has velocity equal to
‘v’, while car B is travelling with the velocity of ‘2v’. Find the ratio of Kinetic
energy of car A to B.

Answer 1

Explanation:

hope you understand...

Answer 2

Answer:

Answer ⇒ Option (c). The minimum stopping distance is same for both the cars.

Explanation ⇒  Let us take an help of the mathematical expression to derive our result.

We know that when car will be stopped then the Force of Friction acting will be the Limiting Friction.

∴ f = μmg

Now, ma =  μmg

⇒ a =  μg

Since, the acceleration is independent of the mass thus the minimum stopping distance will also be independent of the mass as they have the same initial speed. [Taking help of the Second Equation of motion.]

∴ Option (c). is correct answer.