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Find the incorrect statement
- a)body at rest may possess energy
- b)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the ground
- c)the P. E of a freely falling object increases progressively
- d)there is no transfer of energy between you and the rock when you push a huge rack and fail to move it
Correct answer is option 'C'. Can you explain this answer?
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Find the incorrect statementa)body at rest may possess energyb)K.E. is...
The potential energy of a freely falling object decreases progressively due to decrease in height. Kinetic energy is converted into heat and sound energy when a freely falling object on reaching the ground. Work is done only when change in position occurs.
Most Upvoted Answer
Find the incorrect statementa)body at rest may possess energyb)K.E. is...
Body at Rest Possess Energy: Correct Statement
- According to the principle of conservation of energy, energy can neither be created nor destroyed, but it can be transformed from one form to another.
- Even when a body is at rest, it possesses energy in the form of potential energy or chemical energy.
K.E. converted into heat and sound energy: Correct Statement
- When a freely falling object eventually stops on reaching the ground, its kinetic energy (K.E.) is converted into other forms of energy, such as heat and sound energy.
- This is due to the collision and deformation of the object upon impact with the ground, resulting in the generation of heat and sound.
Transfer of Energy when Pushing a Rock: Incorrect Statement
- When you push a huge rock and fail to move it, there is indeed a transfer of energy between you and the rock.
- In this case, the energy you exert while pushing the rock is converted into mechanical energy, but it is not enough to overcome the frictional forces acting on the rock.
- The energy you apply is dissipated as heat energy due to friction between your hands and the rock's surface.
- Therefore, there is a transfer of energy from you to the rock, but it is not sufficient to cause any significant motion.
P.E. of Freely Falling Object: Incorrect Statement
- The potential energy (P.E.) of a freely falling object does not increase progressively.
- As the object falls, its potential energy decreases while its kinetic energy increases.
- This is because potential energy is dependent on the height of the object above the reference level, and as the object falls, its height decreases, resulting in a reduction in potential energy.
- At the same time, the object gains kinetic energy, which is directly proportional to its velocity.
Conclusion:
- The incorrect statement is option C, which implies that the potential energy of a freely falling object increases progressively.
- According to the principle of conservation of energy, energy can neither be created nor destroyed, but it can be transformed from one form to another.
- Even when a body is at rest, it possesses energy in the form of potential energy or chemical energy.
K.E. converted into heat and sound energy: Correct Statement
- When a freely falling object eventually stops on reaching the ground, its kinetic energy (K.E.) is converted into other forms of energy, such as heat and sound energy.
- This is due to the collision and deformation of the object upon impact with the ground, resulting in the generation of heat and sound.
Transfer of Energy when Pushing a Rock: Incorrect Statement
- When you push a huge rock and fail to move it, there is indeed a transfer of energy between you and the rock.
- In this case, the energy you exert while pushing the rock is converted into mechanical energy, but it is not enough to overcome the frictional forces acting on the rock.
- The energy you apply is dissipated as heat energy due to friction between your hands and the rock's surface.
- Therefore, there is a transfer of energy from you to the rock, but it is not sufficient to cause any significant motion.
P.E. of Freely Falling Object: Incorrect Statement
- The potential energy (P.E.) of a freely falling object does not increase progressively.
- As the object falls, its potential energy decreases while its kinetic energy increases.
- This is because potential energy is dependent on the height of the object above the reference level, and as the object falls, its height decreases, resulting in a reduction in potential energy.
- At the same time, the object gains kinetic energy, which is directly proportional to its velocity.
Conclusion:
- The incorrect statement is option C, which implies that the potential energy of a freely falling object increases progressively.
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Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. Can you explain this answer?
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Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. 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 Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. 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 Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. Can you explain this answer?.
Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. 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 Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. 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 Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. Can you explain this answer?.
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Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Find the incorrect statementa)body at rest may possess energyb)K.E. is converted into heat and sound energy when a freely falling object eventually stops on reaching the groundc)the P. E of a freely falling object increases progressivelyd)there is no transfer of energy between you and the rock when you push a huge rack and fail to move itCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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