Question

What does m represent in the equation K = 1/2mv^2?

Answer 1

The kinetic energy of an object is the energy that it possesses due to its motion.

$E_k = \dfrac 12 mv^2\\\\m=\text{mass(kg)}\\\\v = \text{velocity}~\left(\text{ms}^{-1}\right)\\\\E_k = \text{Kinetic energy(J or Nm)}$