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Kinetic energy of a body is increased by 300%. Find the percentage increase in momentum. |
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Answer» Explanation: 11th Physics Work, ENERGY and Power Kinetic Energy Kinetic energy of a particl... PHYSICS Kinetic energy of a PARTICLE is INCREASED by 300%. Find the percentage increase in its momentum. MEDIUM Share Study later ANSWER When the kinetic energy increase by 300 %, new kinetic energy will be K ′ =K+300 K K ′ =K+3K k;=4K We know that K.E. K = 2m p 2
(m is the mass OBJECT ) Therefore, eq. (i) become 2m p ′ 2
=4 2m p 2
p ′ 2=4p 2
p ′
4
p 2
p ′ =2P (ii) % change in mornentum = p p ′ −p
×100 = p 2P−p
×100 % = 1×100=100 % Therefore, increases in momentum is 100 % |
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