1.

Kinetic energy of a body is increased by 300%. Find the percentage increase in momentum.​

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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.

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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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