Question

If the velocity of a body is doubled,it's Kinetic energy is
a) get's halved
b)remains same
c) get's doubled
d)becomes​

Answer 1

Answer:

Because kinetic energy is proportional to the square of the velocity, when velocity is doubled, kinetic energy is quadrupled.

Answer 2

$\red{Answer}$

Kinetic energy = $\orange{1/2×mv^2}$

let v be the velocity

KE=1/2mv²

Now the velocity is doubled so new velocity =2v

KE1=1/2×m×(2v)²

KE1=4×1/2mv²

KE1=4×KE

hence it becomes 4 times of the earlier KE.

Answer=$\blue{4 \ times}$

hope it helps.

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