Question

If x is the distance at which a car can be stopped
when initially it was moving with speed u, then
on making the speed of the car Nu, the distance
at which the car can be stopped is​

Answer 1

Answer:

N²s

Explanation:

case 1 : when car is moving with velocity u

v=0

v²=u²+2as

0=u²+2as

u²=–2as ......(1)

case 2 : when car is moving with velocity Nu

put in equation (1) u=Nu

therefore (Nu)²=–2as'

s'=–N²u²

a. from (1) put u²=–2as

s'=–N²(–2as)

a

s'=N²s