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. A car travelling at 60 km/h uniformly retards for10 s and attains a velocity of 45 km/h. Find theretardation.[Ans. 0.42 m/s?]

Answer»

Since,v=u+atV=12.5U=16.6T=1012.5=16.66+a*1012.5-16.6=10a-4.1=10aa=-4.1/10=-0.41m/s^2So retardation=0.41m/s^2



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