1. Kinetic energy due to rotation of the body is defined as A) (1/2) m (va)². B) (1/2) m (va)+(1/2) I w². c) (1/2) low². D) low². 2. When calculating work done by forces, the work of an internal force does not have to be considered because A) Internal forces do not exist B) The forces act in equal but opposite collinear pairs c) The body is at rest initially D) The body can deform 3. Elastic potential energy is defined as A) +(1/2) k (s)² 4. The kinetic energy of a rigid body consists of the kinetic energy due to B) - (1/2) k (s) A) Only translational motion c) +(1/2) k (v)² B) Only rotational motion None of the shown C) Translational motion and rotational motion