Q. 14.2( 237 Votes )

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.

Answer :

Yes, when external unbalanced force on an object is zero, the object can be travelling with a non-zero velocity 

This can happen under the following conditions:

(a) The object should already be travelling with a uniform speed in a straight line path.

(b) There should be no change in the magnitude of speed.

(c) There should be no change in the direction of motion.

(d) The friction between the object and the ground must be zero.

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