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Give a scientific reason. When an object falls freely to the ground, its acceleration is uniform. - Science and Technology

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प्रश्न

Give a scientific reason.

When an object falls freely to the ground, its acceleration is uniform.

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उत्तर

When an object falls freely to the ground, it is under the effect of a constant force known as the force of gravity. No other forces act on it. Hence, from Newton's second law of motion, we can say that this constant force of gravity accelerates the freely falling object uniformly. This uniform acceleration is known as acceleration due to gravity which acts towards the centre and is denoted by g.

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अध्याय 1: Laws of Motion - Exercises [पृष्ठ १७]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
अध्याय 1 Laws of Motion
Exercises | Q 5. a. | पृष्ठ १७

संबंधित प्रश्न

Define acceleration. State its unit.


Distinguish between acceleration and retardation.


Give one example of the following motion:

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Explain the following concept in your own words with everyday examples:

Acceleration


Give an example of an accelerated body, moving with a uniform speed.


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What does a positive acceleration mean?


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Calculate the acceleration along AB and the retardation along BC.


State whether true or false. If false, correct the statement.

Acceleration can get negative value also.


The speed of a particle is constant. Will it have acceleration? Justify with an example.


A car is being driven at a speed of 20ms-1 when brakes are applied to bring it to rest in 5 s. The deceleration produced in this case will be ______.


Acceleration is a scalar.


It is possible to have objects moving with uniform speed but variable acceleration.


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Reason: For a stationary object, the position does not change with time.


When a body is said to be in

  1. uniform acceleration
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