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A tall cylinder is filled with viscous oil. A round pebble is dropped  from the top with zero initial velocity. From the plot shown in  Fig. 10.1, indicate the one that represents the velocity (v) of the  pebble as a function of time (t ).

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Function of time (t)

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(c) After some time, pebble acquires terminal velocity (i.e. constant velocity) which it falls through a viscous oil.

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