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The brakes applied to a train …

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The brakes applied to a train moving at 90km/h produces a retardation of 5m/s. What distance will it cover before coming to stop

Posted by Hema Hemalakshmi 2 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Srimathi Srinivasan 2 years, 1 month ago

Thank you

1Thank You

Srimathi Srinivasan 2 years, 1 month ago

Initial speed =u =90 km/h=90(5/18) M/s= 25 m/s Final speed =v =0 Acceleration = a=-5 m/s Sq. Let the distance covered =s Since= v2= u2 +2as 0= 25×25 + 2X (-5) Xs 0= 625-10s 10 S = 625 S= 62.5

2Thank You

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CBSE > Class 09 > Science