91Ó°ÊÓ

Simplify each square root. $$ \sqrt{\frac{y^{4}}{x^{3}}} $$

The kinetic energy \(K E\) in foot pounds of a body of mass \(m\) in slugs moving with a velocity \(v\) in feet \(/ \mathrm{sec}\) is given by \(K E=\frac{1}{2} m v^{2}\) (a) Determine the kinetic energy of a 2 -slug body moving with a velocity of \(4 \mathrm{ft} / \mathrm{sec}\). (b) Determine the velocity in feet/sec of a 4-slug body if its kinetic energy is 50 foot pounds.

For the following problems, find the two square roots of the given number. $$ 0.04 $$

For the following problems, simplify the expressions. $$ 5 \sqrt{60}-7 \sqrt{15} $$