find the change in Kinetic energy if
momentum increases by
20%
Answers
Answered by
0
Explanation:
The relation between kinetic energy and momentum is
KE=
2m
p
2
........(1) Where, p is the momentum
When momentum is increases by 20%, new momentum is p
′
p
′
=p+0.2p
p
′
=1.2p
New kinetic energy
KE
′
=
2m
p
′
2
KE
′
=
2m
(1.2p)
2
KE
′
=
2m
1.44p
2
KE
′
=1.44KE ( from equation 1 )
Change in kinetic energy
ΔKE=
KE
KE
′
−KE
×100
ΔKE=
KE
1.44KE−KE
×100
ΔKE=44%
So, kinetic energy is increased by 44 %
Answered by
0
Answer:
So, KE varies as square of the momentum. On 20% increase of p, KE varies as (1.2p)^2 or 1.44p^2. Hence, increase in KE is 44%Explanation:
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