Question

If Kinetic energy of a particle is decreased by200. Find the %age change in momentum.

Answer 1

Answer:

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 %

Explanation:

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