Mark each of the following sentences with the letter S if it is correct or with the letter A if it is incorrect. 1. The momentum of a system of bodies is equal to the sum of the momentum of the bodies of the system.
2. If the momentum of a moving body system is zero then the kinetic energy of the system is also zero.
3. The momentum and acceleration of a body are always beautiful vectors.
4. The measure of momentum p and the kinetic energy K of a body of mass m are related by the relation K = p. 2 / m.
5. The criterion for distinguishing the impacts in frontal, eccentric and lateral is the position of the carriers of the velocities of the bodies before they collide.
. 6In each impact the kinetic energies of the colliding bodies must change,
10. When two spheres with equal masses collide centrally and elastically, the spheres exchange their kinetic energies.
9. In each impact, the momentum of the system of colliding bodies is the same marginally before and immediately after the impact, but varies during the impact.
8. In each central and elastic impact of two bodies the velocities of the bodies before and after the impact are always in the same line.
7. In any two-body collision, the momentum changes of the colliding bodies are opposite.