Question

when is an object said to be in motion? explain with the help of an example. state any four type of motion

Answer 1

is an object covers some distance it is said to be in motion.example- a body moves from 'a' to 'b'..it covers some distance.

Answer 2

An object is said to be in motion if it changes its position with time,with respect to its surroundings.(while an object is said to be at rest if it does not change its position with time with respect to its surroundings).

A boy is running is said to be in motion.
Rotary motion is turning round in a circle, such as a wheel turning.Linear motion is moving in a straight line, such as on a paper trimmer.Reciprocating motion is moving backwards and forwards in a straight line, as in cutting with a saw.