Question 1 An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.
Class 9 - Science - Force and Laws of Motion Page 128
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According to Newton's third law of Motion , No external force is needed to move an object with constant velocity. So, an Object travels with a constant velocity (non-Zero) When it experiences a net Zero external Unbalanced force. The magnitude of this velocity is constant and the direction is same as in the beginning.
An object may also not move at all if it experiences a net Zero external Unbalanced force. This is because , the object may be at rest in the beginning.
An object may also not move at all if it experiences a net Zero external Unbalanced force. This is because , the object may be at rest in the beginning.
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Yes it is possible for an object having no external force and moving with non zero velocity. It is only possible if the object is already in motion and no external force disturbs it. It will move only in the direction the force was applied.
CONDITIONS FOR IT :
1. The object must be already in motion.
2. The object must not experience external force.
It's answer could also be No because the object was in rest before we applied the force on it. So we have to put an external force on it to make the object in motion but once it comes in motion no external force is required.
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