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According to first law of motion
- a)body acted on by net force moves with constant velocity (which may be zero)
- b)body acted on by no net force moves with increasing velocity and negative acceleration
- c)body acted on by zero net force moves with non-zero acceleration
- d)body acted on by no net force moves with constant velocity (which may be zero) and zero acceleration
Correct answer is option 'D'. Can you explain this answer?
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According to first law of motiona)body acted on by net force moves wi...
Explanation:
First Law of Motion:
The first law of motion, also known as the law of inertia, states that an object at rest will stay at rest and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an external force.
Options:
a) Body acted on by net force moves with constant velocity (which may be zero)
This statement is incorrect. A body acted on by a net force will undergo acceleration, not move with constant velocity.
b) Body acted on by no net force moves with increasing velocity and negative acceleration
This statement is incorrect. If no net force acts on a body, it will either remain at rest or continue to move with constant velocity. It will not have increasing velocity or negative acceleration.
c) Body acted on by zero net force moves with non-zero acceleration
This statement is incorrect. If the net force acting on a body is zero, the body will not experience any acceleration. It will either remain at rest or move with constant velocity.
d) Body acted on by no net force moves with constant velocity (which may be zero) and zero acceleration
This statement is correct. If no net force acts on a body, it will continue to move with constant velocity (which may be zero) and zero acceleration. This is consistent with the first law of motion.
Conclusion:
The correct answer is option 'D'. According to the first law of motion, if no net force acts on a body, it will move with constant velocity (which may be zero) and zero acceleration. This is because the absence of a net force means that there is no external force acting to change the body's state of motion.
First Law of Motion:
The first law of motion, also known as the law of inertia, states that an object at rest will stay at rest and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an external force.
Options:
a) Body acted on by net force moves with constant velocity (which may be zero)
This statement is incorrect. A body acted on by a net force will undergo acceleration, not move with constant velocity.
b) Body acted on by no net force moves with increasing velocity and negative acceleration
This statement is incorrect. If no net force acts on a body, it will either remain at rest or continue to move with constant velocity. It will not have increasing velocity or negative acceleration.
c) Body acted on by zero net force moves with non-zero acceleration
This statement is incorrect. If the net force acting on a body is zero, the body will not experience any acceleration. It will either remain at rest or move with constant velocity.
d) Body acted on by no net force moves with constant velocity (which may be zero) and zero acceleration
This statement is correct. If no net force acts on a body, it will continue to move with constant velocity (which may be zero) and zero acceleration. This is consistent with the first law of motion.
Conclusion:
The correct answer is option 'D'. According to the first law of motion, if no net force acts on a body, it will move with constant velocity (which may be zero) and zero acceleration. This is because the absence of a net force means that there is no external force acting to change the body's state of motion.
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Community Answer
According to first law of motiona)body acted on by net force moves wi...
If net force acts on a body then acceleration of the body will also be zero. Hence velocity will not be changed i.e. it continues in its existing state of rest or uniform motion in a straight line.
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According to first law of motiona)body acted on by net force moves with constant velocity (which may be zero)b)body acted on by no net force moves with increasing velocity and negative accelerationc)body acted on by zero net force moves with non-zero accelerationd)body acted on by no net force moves with constant velocity (which may be zero) and zero accelerationCorrect answer is option 'D'. Can you explain this answer?
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