14.How would you describe the collision of a moving steel ball pendulum which collides head-on with another steel ball? A. Elastic C. Inelastic D. Perfectly elastic B. Imperfectly elastic
15. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision. Which of the following law does it describe? A. Law of Inertia B. Law of Acceleration C. Law of Conservation of Mass D. Law of Conservation of Momentum
Answers & Comments
1.C Enelastic
2.D.Law of conservation of Momentum