Discover Questions

Please help! The kinetic energy of an object moving at a speed of 2 m/s and having a mass of 3 kg is -? How much rotational work is done by a 50N force acting tangentially on a cylinder in rotatinf the cylinder through 2 revolutions. Radius=2m? What is the rotational kinetic energy of a 5kg rock rotating in a circle at 5 rads/s and at the end of a 2 m long string? What is an example of an object that first has rotational motion and then has linear motion? What were the 10 biggest contributions to the theory of gravity???? Please help!?