Physics, asked by aayush8734, 1 year ago

pls answer immediately​

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Answered by sandhushelly
1

Answer:

u=72km/h =72×1000÷3600=20m/s

v =0 (applied brake)

s=10m(distance)

Now using (v²=+2as)

(0)²=(20)²+2(-a) ×10 (-a becz retardation takes place)

0=400-20a

0-400=-20a

-400=20a=-400÷20=20

so retardation will be 20m/s....


aayush8734: thx
sandhushelly: wlcm
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