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answer may be 2)
40 km
40 km
teja56:
how
when the speed doubled the acceraltion also gets increased then when brakes are applied the retardation also get increased so 20×2=40
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The answer should be 80 m
how
In the first part of journey, we will get acceleration = -125/18 by using 3rd equation of motion.
Then in 2nd part of journey acceleration remains same. Again use 3rd equation of motion, u will get the stopping distance 80 m
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Answer is 40m
Because since retardation is the same and the speed of car is doubled so distance will be doubled.
Because since retardation is the same and the speed of car is doubled so distance will be doubled.
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