Two cars are initially moving with speeds va and vb. the cars are decelerated at the same rate until they come to a stop. if it takes car a four times as far to stop as car b, then how do their initial speeds compare?

Explanation:

As we know that the speed of car A and car B is given by

&

now we know that both cars are decelerated by same deceleration and stopped finally

so the distance moved by the car is given by the equations

similarly we have

now we know that

where is the