Question

An 82 kg jogger has 810 J of kinetic energy. What is the jogger’s velocity?

Answer 1

on edge its 4.4 and i got it right

Answer 2

By definition, the kinetic energy is given by:

`k = (1/2) * (m) * (v ^ 2)`
Where,
m: mass
v: speed
Clearing the speed we have:

`v ^ 2 = (2 * k) / m v = √((2 * k) / m)`
Substituting values:

`v = √((2 * 810) / 82) v = 4.44 m / s`
Answer:
The jogger's velocity is:
v = 4.44 m / s