Question

Two masses 2kg and 4 kg are moving with equal linear momenta. Find the ratio of their

kinetic energies.

wrong answers will be reported and if u don't know then don't answer ​

Answer 1

Answer:

Two masses 1 kg and 4 kg are moving with equal kinetic energies. The ratio of magnitudes of their linear momentum is

Top answer · 51 votes

Let the velocity be v1 and v2 K.E1 = mv^22 = 1 × v1^22 K.E2 = mv^22 = 4 × v2^22 now K.E1 = K.E2 so we get v1 = 2v2 now ratio of momentum ratio , n =

Answer 2

Answer:

linear momentum = mv

kinetic energy = 1/2 mv^2

let velocity be v1 and v2 for both

1. linear momentum = 2v1

2. linear momentum =4v2

so their kinetic energy = 1/2×2×v1×v1= v^2

And = 1/2×4×v×v=2v^2

Explanation:

taking their ratio 1:2

v^2 /2v^2

=1/2

I hope it helps you