If a body of mass 2 kg is moving with momentum 6 Ns, then its kinetic energy (K.E) will be

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If mass of a body is 2kg which is moving with momentum of 6 kgm/s then its kinetic energy is Physics class 11th mcqs  Mdcat physics mcqs solution  Momentum and KE mcqs  First year physics mcqs

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00:00Question says if a body of mass 2 kg is moving with momentum 6 Ns then its kinetic energy

00:17will be A 6 J B 9 J C 12 J D 15 J. As in this condition we will calculate kinetic

00:29energy by using formula K e is equal to P square upon 2 m. So K e means kinetic energy

00:43will be obtained as momentum is obtained as 6 Ns so the square on 6 divided by 2 into

00:54mass which is obtained as 2 kg so 2. The square of 6 is 36 divided by 2 into 2 it will be

01:064. So the table of 4 on 4 is 1 times and on 36 is 9 times. So kinetic energy is obtained

01:16as 9 J. So the correct option will be B 9 J.

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