Grade 8 Exam > Grade 8 Questions > Assertion (A): An object thrown at a certain ...
Start Learning for Free
Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.
Reason (R): The work done by the force of gravity on the object in this scenario is zero.
- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- c)If Assertion is true but Reason is false
- d)If both Assertion and Reason are false
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Assertion (A): An object thrown at a certain angle to the ground moves...
- Assertion's Correctness: The assertion that an object follows a curved path and falls back to the ground with the initial and final points on the same horizontal line is correct for a projectile motion scenario.
- Reason's Correctness: The reason given that the work done by the force of gravity in this situation is zero is incorrect. Gravity does work on the object during its projectile motion, constantly changing its speed and direction.
- Explanation: In projectile motion, gravity constantly acts on the object, causing it to accelerate towards the ground. This acceleration due to gravity affects the object's path, making it follow a curved trajectory. The work done by gravity is not zero, as it continuously affects the object's motion.
- Conclusion: While the assertion is true regarding the path of the object, the reason provided is false since gravity does work on the object during its motion. Therefore, Assertion is true, but Reason is false.
Most Upvoted Answer
Assertion (A): An object thrown at a certain angle to the ground moves...
Understanding the Assertion and Reason
The Assertion (A) states that an object thrown at a certain angle moves in a curved path and falls back to the ground, with its initial and final points on the same horizontal line. This describes a projectile motion, which indeed follows a parabolic trajectory.
Key Points about the Assertion:
- An object in projectile motion takes a curved path due to the influence of gravity.
- The starting and ending points being on the same horizontal line is characteristic of a complete projectile motion.
Examining the Reason
The Reason (R) claims that the work done by the force of gravity in this scenario is zero. This is incorrect.
Key Points about the Reason:
- Work done is defined as the force applied on an object times the distance moved in the direction of the force.
- Since gravity acts downward while the object moves horizontally and vertically, the work done by gravity is not zero; it influences the object's vertical motion.
Conclusion
Given that:
- Assertion (A) is true because it accurately describes projectile motion.
- Reason (R) is false because gravity does work on the object as it moves.
The correct answer is option 'C': Assertion is true, but Reason is false.
This distinction is crucial for understanding the dynamics of projectile motion and the role of gravitational force.
The Assertion (A) states that an object thrown at a certain angle moves in a curved path and falls back to the ground, with its initial and final points on the same horizontal line. This describes a projectile motion, which indeed follows a parabolic trajectory.
Key Points about the Assertion:
- An object in projectile motion takes a curved path due to the influence of gravity.
- The starting and ending points being on the same horizontal line is characteristic of a complete projectile motion.
Examining the Reason
The Reason (R) claims that the work done by the force of gravity in this scenario is zero. This is incorrect.
Key Points about the Reason:
- Work done is defined as the force applied on an object times the distance moved in the direction of the force.
- Since gravity acts downward while the object moves horizontally and vertically, the work done by gravity is not zero; it influences the object's vertical motion.
Conclusion
Given that:
- Assertion (A) is true because it accurately describes projectile motion.
- Reason (R) is false because gravity does work on the object as it moves.
The correct answer is option 'C': Assertion is true, but Reason is false.
This distinction is crucial for understanding the dynamics of projectile motion and the role of gravitational force.
|
Explore Courses for Grade 8 exam
|
|
Top Courses for Grade 8View all
Question Description
Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? for Grade 8 2025 is part of Grade 8 preparation. The Question and answers have been prepared according to the Grade 8 exam syllabus. Information about Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Grade 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer?.
Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? for Grade 8 2025 is part of Grade 8 preparation. The Question and answers have been prepared according to the Grade 8 exam syllabus. Information about Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Grade 8 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Grade 8.
Download more important topics, notes, lectures and mock test series for Grade 8 Exam by signing up for free.
Here you can find the meaning of Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Assertion (A): An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line.Reason (R): The work done by the force of gravity on the object in this scenario is zero.a)If both Assertion and Reason are true and Reason is the correct explanation of Assertionb)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is falsed)If both Assertion and Reason are falseCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Grade 8 tests.
|
|
Explore Courses for Grade 8 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup