Question

please answer physics class 9th
jisko nahi ata mat answer do
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Answer 1

Distance 2aS = v^2 - u^2, where v=final velocity, and u=initial velocity;

taking S = 10m, and u = 72km/h;

20a=0-5184

Therefore,

a = -5184/20

= -259.2 m/s^2

So, when u = 144km/h,

2*259.2*S = 20736

and S = 20736/518.4

= 40m.

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