Question

two bodies have equal mass. however, the speed of the one body is twice the speed of other body.what is the ratio of kinetic energy of the two bodies?
guys first the best answer will be marked as brainliest

Answer 1

let the mass of the two body is x
so the the speed of one is 2x the speed of the other.
Now, the ratio of the kinetic energy of the two bodies is 4:1

Answer 2

$kinetic \: energy = \frac{1}{2} m {v}^{2} \\ m1 = m2 \\ v1 = 2 \times v2 \\ \frac{ \frac{1}{2}m {(v1)}^{2} }{ \frac{1}{2}m {(v2)}^{2} } = \frac{ {(v1)}^{2} }{ {(v2)}^{2} } \\ = \frac{ {(2v2)}^{2} }{ {(v2)}^{2} } = \frac{4}{1}$