Motion

We are all familiar with the following. From the time we get up from bed, till we go back to sleep in the night, we will not sit at one place continuously. We move on from place to place. In the same way, we observe that insects, birds, animals around us will be constantly moving. On a busy road you will notice many cars moving in different directions. Trains move from one place to another carrying goods and passengers. A stone, when thrown up reaches some height and falls back on the ground. Are all these types of motion similar?

Suppose a man is walking on the road. How do you say that he is moving? It is because the distance between you and the man is changing.

Suppose you are traveling in a train. How can you say that the train is moving? The trees and the buildings outside in the surroundings appear to recede, when we look at them through the window of the train. We also notice that the train is moving when we stand on the ground and observe. Why?

Because motion and force are present everywhere. These are the most important things, which we witness in daily life, so one should know about them.

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