Question

How to use kinetic energy to calculate velocity

Answer 1

we are given

mass is 120kg

Energy is 150000J

$m=120kg$

$E=150000J$

now, we can use kinetic energy formula

$E=\frac{1}{2} mv^2$

where

E is energy in J

m is mass in kg

v is velocity in m/s

so, we can plug these values and find v

$150000=\frac{1}{2} (120)*v^2$

now, we can solve for v

we will get

$v=50m/s$............Answer