Question

Physical independence of force is a consequence of

• A. third law of mtion
• B. second law of motion
• C. first law of motion
• D. all of these

Answer 1

The correct option is C

first law of motion

The explanation for the correct answer.

In case of option C:

1. Newton's first law asserts that if a body is at rest or travelling in a straight path at a constant speed, it will remain at rest or continue to move in a straight line at a constant speed until acted upon by a force.
2. Force's physical independence is a result of Newton's first rule of motion.

The explanation for the incorrect answer.

In case of option A:

1. When two bodies contact, Newton's third law states that they apply forces to each other that are equal in magnitude and opposing in direction. The law of action and response is another name for the third law.

In case of option B:

1. The acceleration of an item generated by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object, according to Newton's second law of motion.

In case of option D:

1. As option C is the correct answer. So, option D is incorrect.

Hence, option (c) is correct.