Question

2. If the speed of a body is doubled, its kinetic energy will increase by
(A) 50%
(B) 200%
(C) 100%
(D) 300%​

Answer 1

Answer:

If the speed of an object is doubled by increasing its velocity, its kinetic energy becomes four times its initial value. Thus kinetic energy increases by four times when its momentum is doubled. Hence kinetic energy of a body is increased most by doubling its speed

Explanation:

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Answer 2

assuming the mass to be Constant

We get v' = 2v

or Kinetics energy = 1/2m4v²

or K' = 4K

Henxe Kinetic energy increasedd by 300 par cent