An object is moving with a certain velocity. In order for the object to KEEP mov

Question

An object is moving with a certain velocity. In order for the object to KEEP moving with the same velocity there must be....
no net (total) force on the object, but there should be a small constant push on the object to "keep it moving".
some small net force on the object, pointed oppoiste the velocity.
some small net force on the object, pointed in the direction of the velocity.
some small net force on the object, pointed in the same direction as the acceleration.
no net (total) force acting on the object, and NO small constant push on the object is needed to "keep it moving".

Explanation / Answer

According to law of inertia for an object to keep moving with same velocity, no net force must be there on a body (this is valid if the frictional forces are absent). But we do not get an ideal situation in real life, so for this to be applicable, a small constant push will be required to keep the body moving.

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