fluid mechanisms

Question 1

surface drag

Answer 1

friction between surface of object and liquid/gas its moving though
talks about clothing

Question 2

form drag

Answer 2

force exerted by gas/liquid on objects leading edge
more streamlined, less drag
talks about position(crouched forwards)

Question 3

way of reducing surface drag

Answer 3

thin bike tyres

Question 4

ways of reducing form drag

Answer 4

positioning of performer (leaning forwards)

Question 5

what two ways to reduce drag

Answer 5

cross sectional area
surface and shape of moving object

Question 6

cross sectional area

Answer 6

smaller the cross sectional area, reduces drag
crouching forwards means reducing size of cross sectional area, meaning reduced drag, helping reach high velocity

Question 7

shape/surface of moving object

Answer 7

making shape of object more streamlined and aerodynamic to reduce drag and increase velocity
-by using tight fitted clothing, low drag material specifically shaped helmets