Fluid Mechanics (DRAG)

Question 1

What is DRAG?

Answer 1

Drag is the resistive force acting against the forward motion of an athlete

Question 2

what is lift?

Answer 2

Lift is the force that acts perpendicular to the direction of motion.

Question 3

What are 4 Factors affecting DRAG?

Answer 3

-Velocity
-Surface characteristics
-Streamlining and shape
-Frontal cross-sectional area

Question 4

How does velocity affect DRAG?

Answer 4

The greater the velocity (speed) the greater the drag/resistance. E.g. strokes

Question 5

How do surface characteristics affect DRAG?

Answer 5

The smoother the surface, the
less the resistance/drag. E.g. a swimming cap.

Question 6

How does FCSA (of a moving body) affect DRAG?

Answer 6

The larger the cross-sectional area, the greater the drag. E.g. diving

Question 7

How does streamlining and shape affect DRAG?

Answer 7

The more streamlined and
aerodynamic the shape the lower the drag. E.g. keeping the body in a long, narrow, and rigid position, with the head tucked and aligned with the body.