Question:
Statement I: The mass of an object is a measure of its inertia.
Statement II: Force of friction always opposes motion of objects.
In the light of the above statements, choose the most appropriate answer from the options given below:
- (A) Both Statement I and Statement II are correct
- (B) Both Statement I and Statement II are incorrect
- (C) Statement I is correct and Statement II is incorrect
- (D) Statement I is incorrect and Statement II is correct
Answer:
Correct Answer: (A) Both Statement I and Statement II are correct
Explanation:
Statement I is correct: Inertia refers to the resistance of any physical object to any change in its velocity. The mass of an object is directly proportional to its inertia — higher the mass, greater the inertia.
Statement II is correct: Frictional force always acts in the direction opposite to the motion, whether it is static, sliding, or rolling.