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प्रश्न
The free fall of an object is possible only in _______.
पर्याय
air
vacuum
on the surface of earth
None of these
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उत्तर
The free fall of an object is possible only in vacuum.
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संबंधित प्रश्न
Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
What is the acceleration of free fall?
A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?
A ball thrown up vertically returns to the thrower after 6 s. Find
- the velocity with which it was thrown up,
- the maximum height it reaches, and
- its position after 4 s.
Fill in the following blank with suitable word :
The acceleration due to gravity on the moon is about ………………of that on the earth.
What do you mean by the term free fall ?
During a free fall, will heavier objects accelerate more than lighter ones ?
Give reason for the following :
The force of gravitation between two cricket balls is extremely small but that between a cricket ball and the earth is extremely large.
Explain why, if a stone held in our hand is released, it falls towards the earth.
Why does a sharp knife cut objects more effectively than a blunt knife ?
What will be the weight of a person on earth, who weighs 9N on the moon?
The value of acceleration due to gravity of earth :
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A car is moving with a uniform velocity 30 ms-1. It is stopped in 2 s by applying a force of 1500 N through its brakes. Calculate the following values : The retardation produced in car.
How is the acccelaration due to gravity on the surface of the earth realted to its mass and radius ?
Free fall of an object does not depend on the mass of the object.
Define acceleration due to gravity.
Write acceleration due to gravity value on the surface of Earth.
The mass of planet ‘X” is four times that of the earth and its radius is double the radius of the earth. The escape velocity of a body from the earth is 11.2 × 103 m/s. Find the escape velocity of a body from the planet 'X’.
