Class 11 Physics Chapter 3 - Motion in a straight line
1. What is a 1 dimensional motion?
2. What is a 2 dimensional motion?
3. What is a 3 dimensional motion?
Explain with 2 example each...
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Answers
Motion in a Straight Line :
1. One dimensional motion :
When the position of object changes with respect to the reference point along with one of the three axes , this type of motion is called 1-d motion.
Eg. = An object falling freely under gravity.
2. Two Dimensional Motion :
When the position of an object changes with respect to reference point along two out of three axes, this type of motion is called 2 - d motion. ( motion in a plane )
Eg. = Motion of insect on the floor.
3. Three Dimensional Motion :
When the position of object changes with respect to all the three axes, then this type of motion is called 3 - d motion.
Eg. = Flying of a mosquito.
Q. What is One Dimensional motion?
Answer:
A body is said to have a one dimensional motion, if only one out of three coordinates specifying the position of an object changes the respective time.
Eg: A car moving on a straight line, A ball thrown upward.
Q. What is Two Dimensional motion?
Answer:
A body is said to have a two dimensional motion, if only two out of three coordinates specifying the position of an object changes with respect to time.
Eg: A carrom coin on a carrom board, An insect crawling on a floor.
Q. What is Three Dimensional motion?
Answer:
A body is said to have a three dimensional motion, if all the three coordinates specifying the position of an object changes with respect to time.
Eg: An aeroplane flying in the sky, A kite flying.