Physics
Grade-9
Easy
Question
Match the following.
| a. Vibratory motion |
1. It is a kind of repetitive motion that repeats itself after a fixed interval (or regular intervals) of time. |
| b. Periodic motion |
2. It is a kind of motion in which a body covers equal distances in equal intervals of time along the same straight line. |
| c. Uniform motion |
3. It is a kind of oscillatory motion in which the moving object undergoes a change in shape or size. |
- a - 3, b - 1, c - 2
- a - 1, b - 3, c - 2
- a - 3, b - 2, c - 1
- a - 2, b - 1, c - 3
Hint:
Uniform motion is the motion of an object along a straight line with uniform velocity.
The correct answer is: a - 3, b - 1, c - 2
When a body moves to and fro about its mean position is called vibratory motion. Vibratory motion can be described as any object moving/swinging back and forth, moving up and down, pulsating, etc. Pendulums, swings, tuning forks, etc are examples of vibratory motion.
periodic motion, in physics, motion repeated in equal intervals of time. Periodic motion is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing in motion, the Earth in its orbit around the Sun, and a water wave.
Uniform motion is the motion of an object along a straight line with uniform velocity. Examples of uniform motion are the movement of the fan's blades, the motion of the earth around the sun, the motion of the pendulum with equivalent amplitude on either side, etc.
a - 3, b - 1, c - 2
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