For a huge luxury liner to move with constant velocity, its engines need to supp

Question

For a huge luxury liner to move with constant velocity, its engines need to supply a forward thrust of 8.15 times 10^5 N. What is the magnitude of the resistive force exerted by the water on the cruise ship? ______________ N Find the terminal speed of a bacteria (size 6 mu m) falling in water. The drag force for a small object like a bacteria is given by F_drag = Crv where C = 0.02 is the drag coefficient, r is the radius and v is the speed. Take the density of the bacterium to be 1100 kg/m^3 (Assume the bacteria is spherical.) __________ mu m/s

Explanation / Answer

here,

the forward thrust , F = 8.15 * 10^5 N

as the ship is moving with constant velocity

the net force on the ship is zero

so the magnitude of resistive force exerted by the water on the cruise ship = the forward thrust = 8.15 * 10^5 N

the magnitude of resistive force exerted by the water on the cruise ship is 8.15 * 10^5 N

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