A body moving along a straight line at 20m/s decelerates at the rate of 4m/s², after 2sec its speed will be
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this one is of class 9th on mcq question i think
Explanation:
body moving along a straight line at 20m/s undergoes an acceleration of -4m/s2. After two seconds its speed will bea)-8 m/sb)12 m/sc)16 m/sd)24 m/sCorrect answer is option 'B'.
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I hope you understand thanks
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