A nonzero net force acts on an object. Is it possible for any of the following quantities to be constant: the object’s (a) speed; (b) velocity; (c) kinetic energy?
Solution 22DQ A nonzero net force acted on an object. Step 1:- The speed can remain constant. Because if the force is a centripetal force and the object is rotating in some circular path, the speed can remain constant even after the force. Step 2: Velocity cannot be constant. As the force is applied which is the mass times acceleration, the velocity has to be changed. Because without changing the velocity, there could be no acceleration and hence no force.