Question

a car is moving with a speed of 50km/hr, cam be stopped by brakes after at least 6m. if the same car is moving at a speed of 100 km/hr, the minimum stopping distance is

Answer 1

Answer:

24 m

Explanation:

The acceleration (a) is constant while the brake. so,

let u = 50 km/h and w = 100 km/h,

s = 6m and x =....

$u^{2}$ = 2as

a = u square/2s

as the v is 0

 

$w^{2}$ = 2ax

x = w square/2a

x = $w^{2}$/2 × $u^{2}$/2s

x = $w^{2}$/$u^{2}$ * s

x = $(100/50)^{2}$ * 6

x = 24 m

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