Question

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Answer 1

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1.

Measurement provides a standard for every day things and processes. From weight, temperature, length even time is a measurement and it does play a very important role in our lives.

2

stopwatch

In order to measure the time in an athletics meet, stopwatches are used. It conveys the total time taken by the athletes to complete the race.

3

motion of an object can be considered by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move.

4.

rectilinear motion

ex - moving car in straight path

rolling motion

ex- potters wheel

periodic motion

ex - the Earth in its orbit around the Sun

5.

periodic motion - The motion which repeats itself after a long interval of time

ex - earth orbiting around sun

non periodic motion - The motion which doesn't repeat itself after a long interval of time.

ex- moving of vehicles..

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Answer 2

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