Class 9 Exam > Class 9 Questions > Which of the following is true of two objects... Start Learning for Free
Which of the following is true of two objects of different masses falling freely near the surface of the moon?
- a)They both have different accelerations.
- b)They have the same velocities at any instant
- c)They experience forces of the same magnitude
- d)They change their inertia
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following is true of two objects of different masses fall...
Two different masses falling freely near the moon’s surface have the same velocities at any instant.
Free Test
FREE
| Start Free Test |
Community Answer
Which of the following is true of two objects of different masses fall...
Understanding Free Fall on the Moon
When two objects of different masses fall freely near the surface of the moon, it's essential to understand how gravity and motion work in this context.
Key Principles of Free Fall
- Uniform Acceleration: On the moon, the acceleration due to gravity is approximately 1.6 m/s², which is much weaker than Earth's 9.8 m/s². However, this gravitational force acts equally on all objects, regardless of mass.
- Newton's Second Law: According to this law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma). However, when considering free fall, the force of gravity is the only force acting on the objects.
Why They Have the Same Velocities
- Acceleration is Constant: Both objects, regardless of their masses, experience the same constant acceleration due to the moon's gravity. This means that they will gain speed at the same rate.
- Initial Conditions: If both objects are dropped from the same height at the same time, they will have the same initial velocities (which is zero if dropped). As they fall, they will continue to have the same velocity at any given moment because they accelerate uniformly.
Conclusion
Thus, the correct answer is option 'B': They have the same velocities at any instant. This phenomenon illustrates the fundamental principle that in a vacuum (or near a celestial body like the moon), the mass of an object does not influence its rate of fall. All objects fall at the same rate under gravity when air resistance is negligible.
When two objects of different masses fall freely near the surface of the moon, it's essential to understand how gravity and motion work in this context.
Key Principles of Free Fall
- Uniform Acceleration: On the moon, the acceleration due to gravity is approximately 1.6 m/s², which is much weaker than Earth's 9.8 m/s². However, this gravitational force acts equally on all objects, regardless of mass.
- Newton's Second Law: According to this law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma). However, when considering free fall, the force of gravity is the only force acting on the objects.
Why They Have the Same Velocities
- Acceleration is Constant: Both objects, regardless of their masses, experience the same constant acceleration due to the moon's gravity. This means that they will gain speed at the same rate.
- Initial Conditions: If both objects are dropped from the same height at the same time, they will have the same initial velocities (which is zero if dropped). As they fall, they will continue to have the same velocity at any given moment because they accelerate uniformly.
Conclusion
Thus, the correct answer is option 'B': They have the same velocities at any instant. This phenomenon illustrates the fundamental principle that in a vacuum (or near a celestial body like the moon), the mass of an object does not influence its rate of fall. All objects fall at the same rate under gravity when air resistance is negligible.
 | Explore Courses for Class 9 exam |  |
Top Courses for Class 9View all
Top Courses for Class 9
Question Description
Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer?.
Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? for Class 9 2026 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following is true of two objects of different masses falling freely near the surface of the moon?a)They both have different accelerations.b)They have the same velocities at any instantc)They experience forces of the same magnituded)They change their inertiaCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 9 tests.
| Explore Courses for Class 9 exam | |
Top Courses for Class 9
Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
