Algebra for physics Knowledge-Based Download PDF

Questions

1. 1.

   The kinetic energy of an object with mass $m$ and speed $v$ is given by $K = \frac{1}{2}mv^2$. Which of the following expressions correctly isolates the speed $v$ in terms of $K$ and $m$?

   • A) $v = \frac{2K}{m}$
   • B) $v = \sqrt{\frac{2K}{m}}$
   • C) $v = \sqrt{\frac{K}{2m}}$
   • D) $v = \frac{\sqrt{2K}}{m}$