Grade 12General Physics
If the kinetic energy of a body charges by 20 % then its momentum would changed by
If the kinetic energy of a body charges by 20 % then its momentum would changed by
1 Answer
Arun
Dear student
Kinetic energy is given as KE=p^2/2 m=(1/2 m) P^2= constant.P^2
Now P—->P+0.20—→KE—→const.(P+0.20 P)^2
So( P+0.20 P)*2 -P^2= 0. 44 P^2 ,the increase in KE.
Therefore,0.44 P^2/P^2= 0.44 = 44%. the percentage increase in the KE.
Regards
Arun
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