Question

Statement I Average speed of a continuously moving particle can never decrease with time.

Statement II Distance travelled by a continuously moving particle is always increasing.

• A. Statement I is True, Statement II is True; Statement II is a correct explanation for Statement I
• B. Statement I is True, Statement II is True; Statement II is not a correct explanation for Statement I
• C. Statement I is True, Statement II is False
• D. Statement I is False, Statement II is True

Answer 1

The correct option is D

Statement I is False, Statement II is True

The explanation for the Assertion statement:

1. The average speed of a continuously moving particle can never decrease with time because $average\mathit{}speed\mathit{=}\frac{Total\mathit{}distance}{Total\mathit{}time}$.
2. This statement is false because a continuously moving particle has uniform speed throughout its motion which means the average speed remains the same.

The explanation for Reason statement:

1. The distance traveled by a continuously moving particle always increases with time.
2. This statement is true because a continuously moving particle will always cover some distance increasing the distance.
3. Formula to calculate distance covered at a particular speed, $distance=speed\times time$

Statement I is false and Statement II is true. Hence, Option D is correct