Question

please give right answer​

Answer 1

Answer:

i dont know sorry

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Answer 2

Answer:

It's kinetic energy becomes four times when velocity is doubled

It's kinetic energy becomes nine times when the velocity is tripled

Explanation:

mass = m

v = 5m/s

Kinetic energy = 25 J

Kinetic energy = 1/2 mv^2

Therefore Kinetic energy is directly proportional to mass and square of their velocity.

If it's velocity is doubled:

v = 2v

Kinetic energy = 1/2 m(2v)^2

= 1/2 m 4v^2

Therefore, kinetic energy becomes four times the initial kinetic energy.

If it's velocity is increased three times:

v = 3v

Kinetic energy = 1/2 m(3v)^2

= 1/2 m 9v^2

Therefore, kinetic energy becomes nine times the initial kinetic energy.

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