jiwanthapa06 jiwanthapa06

21-04-2017
Physics

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What is the percentage increase IN kinetic energy(K.E) ,If the momentum(p) of a moving body is increase by 10%?And How? (If K.E= p^2/2m)

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kettboy kettboy

21-04-2017

[tex]KE = \frac{p^2}{2m} [/tex] (start kinetic energy)
[tex]KE = \frac{(1.1p)^2}{2m} =1.21 \times \frac{p^2}{2m} [/tex]
[tex]KE_n_e_w=1.21\times KE_o_l_d[/tex]
Therefore increasing the momentum by 10% increases KE by 21%.

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