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: 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
举一反三
- The forms of fluid motion in impeller include A: Circular motion B: Relative motion C: Vertical motion D: Absolute motion
- 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
- 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
- An example of this is motion parallel to the earth’s surface.
- For a point on a spinning disc in uniform circular motion, which of the following is not constant? A: It's angular speed B: It's angular acceleration C: It's centripetal acceleration D: The magnitude of it's total acceleration E: None of the others