Write down newtons second law for the velocity of the, Ask an Expert

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Q. When objects are moved through a very viscous fluid, they experience drag proportional to their velocity:

F_drag = kA(roh)v;

for A is the cross sectional area of the object, roh is the density of the fluid and v is the speed of the moving object

let k be a constant,

write out Newton's Second Law for the velocity of the cube, and solve with an initial velocity of 0.

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