Toni has a mass of 43 kg and is moving with a speed of 11.6 m/s. Assume that air resistance is negligible.
(a) Find Toni's kinetic energy.
J
(b) Toni's speed changes to 5.8 m/s. Now what is her kinetic energy?
J
(c) What is the ratio of the kinetic energies in parts a and b?
(kinetic energy in a / kinetic energy in b)