An object thrown in the air has a velocity after seconds that can be described by v(t) = - 9.8z + 24(m) meters/second) and a height h(t) = - 4.9t ^ 2 + 2t + 60 in meters). The object has n = 2 kilograms. The kinetic energy of the shirst is given by K= 1 2 mr^ 2 , and the potential energy is given by 19.5mh. Find an expression for the total kinetic and potential energy K+ U as a functim of time. What does this expression tell you about the energy of the falling object?