Momentum and CollisionHard
Question
A piece of cork starts from rest at the bottom of a lake and floats up. Its velocity v is plotted against time t. Which of the following best represents the resulting curve ?
Options
A.
B.
C.
D.
Solution
As the cork moves up, the force due to buoyancy remains constant. As its speed increases, the retarding force due to viscosity increase, being proportional to the speed. Thus the acceleration gradually decreases.
Create a free account to view solution
View Solution FreeMore Momentum and Collision Questions
Two vessels A and B have the same base area and contain water to the same height, but the mass of water in A is four tim...Two very wide parallel glass plates are held vertically at a small separation, d, and dipped in water. Some water climes...A copper ball of radius ′r′ travels with a uniform speed ′v′ in a viscous fluid. If the ball is ...Water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column, i. e. , the ar...Some pieces of impurity (density = ρ) is embedded in ice. This ice is floating in water (density = ρw). When i...