Two expressions were used for the drag force experienced by a moving object in a liquid. One
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Two expressions were used for the drag force experienced by a moving object in a liquid. One depended upon the speed, while the other was proportional to the square of the speed. In which types of motion would each of these expressions be more applicable than the other one?
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The expression for drag force that depends linearly on speed is more applicable to slowmoving objects in viscous fluids while the expression for drag force that is proportional to the square of speed is more applicable to fastmoving objects in nonviscous fluids Slowmoving objects in viscous fluids In slowmoving objects the fluid particles have time to move around the object smoothly and the drag force is primarily due to the viscosity of the fluid The viscosity of a fluid is a measure of its resistance to flow The higher the viscosity of a fluid the more drag force it will exert on a moving object ...View the full answer
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