Question

Two cars of unequal masses use similar tyres. If they are moving with same initial speed, the minimum stopping distance.

• A. Is smaller for the heavier car
• B. Is smaller for the lighter car
• C. Is same for both the cars
• D. Depends on the volume of the car

Answer 1

Answer: (C)

Is same for both the cars

We know that

$V^2=u^2-2as$

Here $V=O$

$\therefore O=u^2-2as$

$\therefore S=\frac{u^2}{2a}$

Now u is same for both cars

Also acceleration is same

$\therefore \frac{u^2}{2a}$ is same for both

$\therefore$ Minimum stopping distance is also same