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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : The kinetic energy, with any reference, must be positive.
Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.
- a)Both assertion and reason are true and reason is the correct explanation of assertion.
- b)Both assertion and reason are true but reason is not the correct explanation of assertion.
- c)Assertion is true but reason is false.
- d)Assertion is false but reason is true.
Correct answer is option 'A'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion is fo...
KE with any reference must be positive as in its expression velocity appears as a square i.e., with power 2 and mass is never negative.
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Direction: In the following questions, a statement of assertion is fo...
Assertion: The kinetic energy, with any reference, must be positive.
Reason: It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.
The correct answer is option 'A' - both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Explanation:
Definition of Kinetic Energy:
Kinetic energy is the energy possessed by an object due to its motion. It is given by the formula:
Kinetic Energy (K.E.) = 1/2 * mass * velocity^2
Explanation of the Assertion:
The assertion states that the kinetic energy, with any reference, must be positive. This means that the kinetic energy of an object cannot be negative or zero.
Explanation of the Reason:
The reason provided is that in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.
Let's analyze the reason in detail:
1. The presence of velocity squared: The reason correctly mentions that the velocity appears with power 2 in the expression for kinetic energy. This implies that the velocity is multiplied by itself. Since the square of a positive number is always positive, the velocity term in the expression contributes only positive values to the kinetic energy.
2. Scalar quantity of mass: The reason also correctly states that mass is a scalar quantity. Scalar quantities have only magnitude and no direction. This means that mass cannot be negative. Since the mass is multiplied by the positive velocity squared term, the overall kinetic energy will always be positive.
Conclusion:
The reason provided in the statement is a correct explanation of the assertion. The kinetic energy, with any reference, must be positive because the velocity appears with power 2 in the expression for kinetic energy and mass is a scalar quantity which cannot be negative.
Reason: It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.
The correct answer is option 'A' - both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
Explanation:
Definition of Kinetic Energy:
Kinetic energy is the energy possessed by an object due to its motion. It is given by the formula:
Kinetic Energy (K.E.) = 1/2 * mass * velocity^2
Explanation of the Assertion:
The assertion states that the kinetic energy, with any reference, must be positive. This means that the kinetic energy of an object cannot be negative or zero.
Explanation of the Reason:
The reason provided is that in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.
Let's analyze the reason in detail:
1. The presence of velocity squared: The reason correctly mentions that the velocity appears with power 2 in the expression for kinetic energy. This implies that the velocity is multiplied by itself. Since the square of a positive number is always positive, the velocity term in the expression contributes only positive values to the kinetic energy.
2. Scalar quantity of mass: The reason also correctly states that mass is a scalar quantity. Scalar quantities have only magnitude and no direction. This means that mass cannot be negative. Since the mass is multiplied by the positive velocity squared term, the overall kinetic energy will always be positive.
Conclusion:
The reason provided in the statement is a correct explanation of the assertion. The kinetic energy, with any reference, must be positive because the velocity appears with power 2 in the expression for kinetic energy and mass is a scalar quantity which cannot be negative.
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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer?.
Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : The kinetic energy, with any reference, must be positive.Reason : It is because, in the expression for kinetic energy, the velocity appears with power 2 and mass is a scalar quantity.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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