Answer:
4 m/s
Explanation:
The formula for kinetic energy is [tex]KE = \frac{1}{2}mv^2[/tex] where m is mass and [tex]v^2[/tex] is velocity squared. This problem can be solved by rearranging this formula to solve for velocity.
Step 1: Isolate the velocity
[tex]2KE=mv^2[/tex]
[tex]\frac{2KE}{m}=v^2[/tex]
[tex]v=\sqrt{\frac{2KE}{m}}[/tex]
Step 2: Plug in given numbers and solve
[tex]v=\sqrt{\frac{2*64}{8}}=\sqrt{16}[/tex]
v = 4 m/s
