CBSE BOARD X, asked by rakhshandirect5871, 1 year ago

Is ncert exemplar we should practice

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Answered by aditya127

0

yeh its good..........

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the kinetic energy of an object of mass, m moving with a velocity city of 5ms-1 is 25 J. what will be its kinetic energy if its velocity is doubled? (Answers) Expression for kinetic energy Ek= ½ mv2 m = Mass of object v = Velocity of the object in ms−1 Given that kinetic energy, Ek=25J (i) If the velocity of an object is doubled, then v = 5 × 2 = 10 ms−1 . Therefore, its kinetic...