Question

An automobile travelling with a speed
of 60 km/h, can brake to stop, within a
distance of 20 m. If the car is going
twice as fast i.e.,
120 km/h, the stopping distance will
be
​

Answer 1

Answer:

answer is 80.15 cm.

Explanation:

Initial velocity U = 60 km/h=16.66m/s

Using V square -U square =2as

given s= 20 m and V=0m/s

=. -(16.66) square=2*a*20

acceleration(a) =6.93 m/s square.

Now in second case :-

U =120 km/ h=33.33m/s and velocity=0 m/s

Using V square -U square= 2as

=-(33.33) square= 2*(-6.93)*s

=s =80.15 cm....

Hope this helps Thank you.......

Answer 2

answer 80.15 m or 80 m

hope it helps u

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