Physics · Oct / Nov 2019 · Paper 12 · Question 14

An object X has mass $m$ and velocity $v$. A second object Y has mass $2m$ and velocity $2v$. What is the value of the ratio $\dfrac{\text{kinetic energy of Y}}{\text{kinetic energy of X}}$?

1. A1
2. B2
3. C4
4. D8

As printed in the paper