At the opposite extreme(相反的极端) from a perfectly elastic collision(理想弹性碰撞) is one in which the colliding bodies(物体) stick(粘) together as would two lumps of putty(油灰块).
举一反三
- Two masses collide and stick together. Before the collision one of the masses was at rest. Is there a situation in which the kinetic energy is conserved in such a collision? A: Yes, if the less massive particle is the one initially at rest. B: Yes, if the more massive particle is the one initially at rest. C: Yes, if the two particles have the same mass. D: No, kinetic energy is always lost is such a collision.
- The Council of the European Union is one of two legislative bodies and together with the European Parliament serves to amend and approve the proposals of the European Commission.( )
- If the correlation between two stocks is-1,the returns____. A: generally move in the same direction. B: move perfectly opposite one another. C: are unrelated to one another as it is<0. D: have standard deviations of equal size but opposite signs.
- After they are produced from acetyl-CoA in the liver, ketone bodies are mainly used for which one of the following processes?
- From a high angle overlooking the road, we watched the two cars racing toward one another, headed _________ a collision course.