Solution of task 20.4.5 from the collection of Kepe OE

Solution of task 20.4.5 from the collection of Kepe OE

20.4.5
A body of mass m = 20 kg slides along a smooth surface downward. Determine the kinetic potential of the body at the time when the body coordinate s = 2 m and the velocity v = 3 m / s. Accept the potential energy of the body by zero at the position where the coordinate s = 0. (Answer -75.8)