Tripling speed of motor car multiplies distance needed for stopping it by

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5.Work, Energy, Power and Collision

easy

Tripling the speed of the motor car multiplies the distance needed for stopping it by

A

$3$

B

$6$

C

$9$

D

Some other number

Solution

(c)$s \propto {u^2}$ i.e. if speed becomes three times then distance needed for stopping will be nine times.

Standard 11

Physics

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