Question

Cms 27. A car moving with a speed of 40 km/h can be stopped by applying brakes after atleast 2 m. I the same car is moving with a speed of 80 km/h what is the minimum stopping distance a) 8 m b) 2 m c) 4 m do 6 m 4​

Answer 1

Correct option is

D

8m

Stopping distance s=

2a

u

2

s

1

s

2

=

u

1

2

u

2

2

⇒s

2

=[

u

1

u

2

]

2

s

1

⇒s

2

=(

40

80

)

2

2⇒s

2

=8m

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