Answer:
[tex]v=\sqrt{(2x/m)}\ \ m/s[/tex]
Explanation:
Potential Energy= Kinetic Energy
Let [tex]x[/tex] be the value of Kinetic Energy.
We know that
[tex]PE=KE=x\\x=\frac{1}{2}mv^2\\[/tex]
Make [tex]v[/tex] the subject of the formula to get speed at the bottom of the hill.
[tex]v^2=2x/m\\v=\sqrt{2x/m}[/tex]