Drag force and Terminal Velocity

What is Drag Force?

• The force that propels an object forward.

• The force that opposes the motion of an object through a fluid (liquid or gas).

• The force that keeps an object floating on water.

• The force that causes an object to sink in a fluid.

Which of the following factors affects the magnitude of drag force on an object moving through a fluid?

• The shape and size of the object.

• The temperature of the fluid.

• The color of the object.

• The density of the object.

Which physical quantity is used to measure drag force?

• Mass

• Velocity

• Acceleration

• Drag coefficient

For an object moving at a constant velocity in a fluid, which statement is correct regarding the drag force?

• The drag force is equal to zero.

• The drag force is equal to the weight of the object.

• The drag force is equal to the net force acting on the object.

• The drag force is equal to the product of mass and acceleration.

In which direction does the drag force act on an object moving through a fluid?

• In the same direction as the object's motion.

• Perpendicular to the object's motion.

• Opposite to the object's motion.

• At an angle of 45 degrees to the object's motion.

Which type of fluid experiences more drag force: high viscosity or low viscosity?

• High viscosity fluid experiences more drag force.

• Low viscosity fluid experiences more drag force.

• Drag force is independent of fluid viscosity.

• It depends on the object's shape.

When does the drag force experienced by an object moving through a fluid become maximum?

• At low speeds

• At moderate speeds

• At high speeds

• At constant speeds

Which of the following shapes experiences the least drag when moving through a fluid?

• Sphere

• Cube

• Cylinder

• Flat Plate

Which factor does NOT influence the drag force experienced by an object in a fluid?

• Object's shape and size

• Fluid viscosity

• Object's weight

• Object's color

What is the relationship between the drag force and the velocity of an object moving through a fluid?

• Directly proportional

• Inversely proportional

• Unrelated

• Exponential