Question

4. Are rest and motion relative terms or opposite terms?
5. Give an example, when a body is at rest as well as in motion.
6. What is the numerical ratio of displacement to distance for a moving object?
(ID) SHORT ANSWER TYPE QUESTIONS 1
1. What do you understand by the giving terms: (a) Rest, (b)motion ​

Answer 1

Answer:

Rest and motion is called relative terms because they are defined with respect to each other. Without motion,there will be nothing at rest or vice-versa

Answer 2

Answer:

ans 4 Rest and motion are the relative terms because they depend on the observer's frame of reference. ... So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body.

ans 5 A body at rest with respect to one observer may be in motion with respect to another observer. For example a person sitting in a moving train is at rest with respect to the train. ... We think that we are at rest but we are actually in motion as the earth itself is moving with respect to the Sun.

ans 6 We know, magnitude of displacement is the staright line distance between the initial point and the final point of the path of the moving body.

Dispalcement could be negative, positive or zero. but distance is always positive or zero when there is no motion.

So, the ratio of displacement to distance for a moving object is equal to less than 1.

short answers type question

ans 1

Rest means no movement, no motion nothing. Motion mean the object have an velocity and it should do an displacement.