Answer:
Step-by-step explanation:
[tex]E=\frac{1}{2}mv^2[/tex]
All the variables on the right are being multiplied together then the whole mess is being divided by 2. Let's get rid of the 2 first. The undoing of division is multiplication, so we will begin by multiplying both sides by 2 to get
[tex]2E=mv^2[/tex]
Next we will move the m. The undoing of multiplication is division. So we divide both sides by m to get
[tex]\frac{2E}{m}=v^2[/tex]
The undoing of a square is to take the square root, so we will do that to both sides giving us, finally
[tex]\sqrt{\frac{2E}{m} }=v[/tex]
