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Can you explain the answer of this question below:
If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.
- A:positive acceleration and negative velocity
- B:positive acceleration and positive velocity
- C:negative acceleration and positive velocity.
- D:negative acceleration and negative velocity
The answer is d.
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Verified Answer
Can you explain the answer of this question below:If the upward direct...
Both velocity and acceleration are in the downward direction. Thus, they will be considered negative as they are vectors and the upward direction is positive.
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Can you explain the answer of this question below:If the upward direct...
Explanation:
When a body falls freely from a height, it is subjected to gravitational force which acts in the downward direction. The acceleration due to gravity is always acting in the downward direction and it is denoted by 'g' (9.8 m/s²).
Sign of Velocity:
Velocity is the rate of change of displacement with respect to time. When an object falls freely, it moves in the downward direction with increasing speed. Initially, the velocity is zero, but as the object falls, its velocity keeps increasing. The velocity is negative because it is moving in the opposite direction to the upward direction which is taken as positive.
Sign of Acceleration:
Acceleration is the rate of change of velocity with respect to time. When an object falls freely, it is subjected to a constant acceleration due to gravity which is acting in the downward direction. Therefore, the acceleration is also negative.
Therefore, the sign of velocity and acceleration of a freely falling object is negative.
Conclusion:
Hence, option 'D' is the correct answer which states that the sign of acceleration and velocity when a body falls freely from a height is negative.
When a body falls freely from a height, it is subjected to gravitational force which acts in the downward direction. The acceleration due to gravity is always acting in the downward direction and it is denoted by 'g' (9.8 m/s²).
Sign of Velocity:
Velocity is the rate of change of displacement with respect to time. When an object falls freely, it moves in the downward direction with increasing speed. Initially, the velocity is zero, but as the object falls, its velocity keeps increasing. The velocity is negative because it is moving in the opposite direction to the upward direction which is taken as positive.
Sign of Acceleration:
Acceleration is the rate of change of velocity with respect to time. When an object falls freely, it is subjected to a constant acceleration due to gravity which is acting in the downward direction. Therefore, the acceleration is also negative.
Therefore, the sign of velocity and acceleration of a freely falling object is negative.
Conclusion:
Hence, option 'D' is the correct answer which states that the sign of acceleration and velocity when a body falls freely from a height is negative.
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Community Answer
Can you explain the answer of this question below:If the upward direct...
Because if a body freely falls from a height then it is in retarded motion so its velocity and acceleration is taken as negative
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Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d.
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Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d. 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 Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d. covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d..
Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d. 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 Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d. covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height.A:positive acceleration and negative velocityB:positive acceleration and positive velocityC:negative acceleration and positive velocity.D:negative acceleration and negative velocityThe answer is d..
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