Physics, asked by anika678, 1 year ago

heya....

if the momentum of a body increases by 20% find the percentage increase in its kinetic energy ?

Answers

Answered by Anonymous
3
If the increase in momentum is due to an increase in speed, then the increase in KE = 44%. If theincrease in momentum is due to an increase in mass, then theincrease in KE = 20%. If both mass and speed are varying, then the increase in KE is indeterminate.
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Answered by Alfaizali903
2

Answer:

Percentage increase by 20%

So,

Percent E = P2² - P1² / P1² X 100

Let P1 = 100

P2 = 120

Percent E = (120)² - (100)² / (100)² X

100

= (120)² - (100)² / (100)

= (120+100) (120 - 100) / 100

= 220 X 20 / 100

= 44%

So , kinetic energy increases by 44%.

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