Question

An automobile travelling with a speed of 60 km per hour ,can break to stop within a distance of 20 metre. if car is going twice as fast i.e. 120 kilometre per hour the stopping distance will be

Answer 1

Answer:

Ans is 80

Explanation:

use v^2-u^2=2as

60^2=2*a*20

and

120^2=2*a*X

thus,X=80m...hope that helps