Q.6) Give the scientific reasons.
1) The velocity of an object at rest is considered to be uniform.
2) When an object falls freely to the ground, its acceleration is uniform.
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Velocity of an object is said to be uniform when its speed and direction does not change. The object at rest has uniform speed of zero all the time and does not even change the direction. Hence, the velocity of an object at rest is considered to be uniform.
When an object falls freely to the ground, it is under the effect of a constant force known as 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 the freely falling object uniformly
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