The reason _______ nothing on earth is motionless is_______ the earth is in constant motion(运动).
举一反三
- Which of the following is NOT an example of accelerated motion? A: Vertical component of projectile motion B: Circular motion at constant speed C: A swinging pendulum D: Earth’s motion about sun E: Horizontal component of projectile motion
- An example of this is motion parallel to the earth’s surface.
- The reason why all the solar energy falling on the earth can’t be utilized is that ______．
- The<br/>Earth is __________ rotating on its axis. () A: constantly B: opposite C: false D: constant
- The reason why colonists will probably live longer is that ________. A: their hearts will suffer less strain than on the earth B: they live in a less crowded and less polluted world C: the days and nights on Venus are much longer than on the earth D: the life on Venus will be more comfortable than on the earth