Question

A 34 kg child has 190 J of kinetic energy after sledding down a hill. What is the child’s velocity in meters per second at the bottom of the hill?

Answer 1

Answer: 3.34 meters

Explanation:

If the kinetic energy formula states that 1/2mv^2= KE then we are solving for v. We already know mass and Joules so the equation becomes

$\frac{1}{2}$(34)$v^{2}$=190

17v^2=190

v^2=190/17

v=3.34

Solve for V

V=3.34