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Question

What will happen during the free fall of a massive object under the influence of gravitational force of the earth ?

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

Velocity of the massive object increases

The correct answer is Option 4 i.e. Velocity of the massive object increases .

During the free fall of a massive object under the influence of Earth’s gravitational force, the velocity of the object increases. This happens because the only force acting on the object is gravity, which causes it to accelerate towards the Earth. The acceleration due to gravity is approximately 9.8 m/s², meaning the object gains speed by 9.8 meters per second every second it is falling (ignoring air resistance). This increase in velocity continues until the object hits the ground or another force opposes its motion. Importantly, during free fall, no energy is added to or removed from the object by any other means—gravity alone does the work. The object's mass remains constant, and only its velocity and kinetic energy change due to gravitational acceleration.

Other options explained:

  • Mass of the object increases:  An object’s mass remains unchanged during free fall.

  • Mass of the object decreases:  Mass is constant and unaffected by motion.

  • Velocity of the object decreases:  – In free fall, velocity increases due to gravitational pull

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Similar Questions

  1. The value of g on the moon is 1/6 th of the value of g on the earth. If a man can jump 1.5 m high on the earth, on the moon, he can jump up to a height of:

  2. Fill in the blank with the most appropriate option.

    The Universal Constant of Gravitation is ________.

  3. Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be:

  4. Let \(W_e\) and \(W_m\) be the weight of an object on the Earth and the Moon, respectively. Then, the ratio \(W_e/W_m\) is equal to ______.
  5. A boy throws two balls in air in such a manner that when the first ball is at its maximum height he throws the second ball. If the balls are thrown with the time difference of one second, the maximum height attained by each ball is \((g = 10 \text{ m/s}^2)\)
  6. Two spheres of masses \(m\) and \(M\) are situated in air and the gravitational force between them is \(F\). The space between the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be:
  7. An object with a specific mass will weigh ______.
  8. Which of the following statements is/are INCORRECT?

    A. The ratio of the force of gravitation between two masses, m1 and m2, kept at a distance R on the earth and on the moon is 1:1.
    B. Nm2/kg2 is the SI unit of G.
    C. The value of G depends on the distance between the bodies.
    D. The value of G depends on the masses of the bodies.
  9. Acceleration due to gravity is highest at ____.

  10. A 100 gram ball is kept on the top of a building of 70 m height. Find the potential energy of the ball (assume g = 10 m/s 2)


Important Questions from Gravity

  1. Which of the following statement is correct?

    I. Gravitation is a weak force unless large masses are involved.

    II. The weight is equal to the product of mass and acceleration due to gravity.

  2. What is the reason that the value of g (acceleration due to gravity) becomes greater at the poles than at the equator?

  3. If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is twice as that of earth is ___________.

  4. A man's mass is 72 kg on the earth. His mass on the moon will be:

  5. At which of the following place, weight of an object is maximum?

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