A block moving horizontally on a smooth surface with a speed of \(40{\ \text{ms}}^{- 1}\) splits....

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A block moving horizontally on a smooth surface with a speed of \(40{\ \text{ms}}^{- 1}\) splits into two equal parts. If one of the parts moves at \(60{\ \text{ms}}^{- 1}\) in the same direction, then the fractional change in the kinetic energy will be \(x:4\) where \(x =\) ____. 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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