Rest and Motion
Rest and Motion: Overview
This topic covers concepts such as Reference Point, Translatory Motion, State of Motion, State of Rest, Periodic Motion, and Difference between Circular and Rotational Motion.
Important Questions on Rest and Motion
How does rotatory motion differ from circular motion? Explain.
Is circular motion important for rotational motion?
What is the difference between circular motion and rotational motion?
What is difference between circular motion and rotational motion?
Define the state of rest. Comment on the speed of an object at the state of rest.
Motion of the needle of a sewing machine is _____ motion.
Motion of a child on a swing is _____ (periodic/rotational) motion.
The clocks or watches used to measure time are based on _____.
Name the type of motion in which all parts of a moving body move in the direction of motion.
Which instrument is used to measure the time taken to read a lesson?
(Thermometer, Watch, beaker, measuring tape, Weighing scale)
An object is said to be in motion if it changes its position relative to a _____.
(Choose from: Temperature/reference point)
If a body moves to and fro repeatedly about a mean position, its motion said to be _____ motion.
In present day parks, there are many instruments of playing games. What type of motion do they show?
Match the following columns-
| Column | Column |
| 1. Periodic motion | a. Motion of a potter's wheel |
| 2. Circular motion | b. Motion of the strings of a violin |
| 3. Straight line motion | c. Motion of a swing |
| 4. Vibratory motion | d. Motion of a ball dropped from a height |
Which of the following motions does not repeat itself after a certain time interval?
Some changes which occur after regular time intervals are called _____.
Give one example of the following.
Periodic motion
An oscillatory motion can never be.
The motion of the fan is an example of
