A body in motion remains in motion at a constant speed in a straight line unless acted upon by an external force. 运用分句法的译文为 .
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
- A body in equilibrium (平衡) must be either at rest (静止) or in motion with constant velocity.
- Which of the following motions will cause flexible impulse in a cam mechanism? A: Constant velocity motion B: Constant acceleration motion C: Harmonic motion D: Cycloidal motion
- Nobody can be set in motion without a force ______ on it. A: act B: to act C: acting D: acted
- Which of the following motions exhibit no impulse in a cam mechanism? A: Constant acceleration motion B: Harmonic motion C: Cycloidal motion D: 3-4-5 orders polynomial motion