Question

(3)
A
(2) 21%
(1) 20%
(4) 19%
(3) 40%
If momentum of an object is increased by 10% then its kinetic energy will increase by​

Answer 1

Answer:

option 2.

It will increase by 21 %

Let the initial mass of a body be m and velocity v

Initial momentum = mv

Initial kinetic energy = 1/2mv^2

Now given that momentum increased by 10% then ,

New momentum = mv + 10 % mv

= mv + 10/100mv

= mv + mv /10

= 11mv/10

m(11v)/10

Increase in velocity = v/10

New kinetic energy = 1/2m(11v)^2/10

= 121/100 mv^2/2

Therefore, Increase in velocity = 21%

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Answer 2

Answer:

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