Answer:
By making change of subject.
Step-by-step explanation:
kinetic energy =1/2×mass×velocity²
since we're finding for velocity
we will make velocity the subject.
velocity² = 2×kinetic energy
m
You will square both sides
Given,
velocity = square root of 2× kinetic energy/ m. Or you will live the formula as how it is and place the value of the question to find velocity.