Power: Drag ratio Flashcards
1
Q
Define power: drag ratio
A
- thrust to overcome drag
(speed proportional)
2
Q
Define power
A
- energy expenditure per unit time
3
Q
What is power reliant on? What is it proportional to?
A
- muscle contraction
- muscle mass
4
Q
Muscle mass is proportional to ____
A
body mass
5
Q
Power ____ in proportion to body mass. Why?
A
- increases
- more muscle=more power
6
Q
Drag is proportional to what? (3)
A
- velocity squared
- shape
- total SA
7
Q
Faster = ??
A
more drag
8
Q
Power proportional to body mass (muscle) and is equal to …
A
linear dimension cubed
9
Q
drag proportional to SA and cross sectional area is equal to …
A
linear dimension squared
10
Q
SA: body mass ratio decreases as …
A
- power:drag ratio increases
11
Q
According to power:drag ratio, larger fish should swim _____
A
faster
12
Q
What 2 fish have largest endurance swimming?
A
- sockeye salmon
- eels
13
Q
What 3 fish are best at spring swimming?
A
- brown trout
- atlantic cod
- atlantic herring
14
Q
What do effects of body size on swimming speed conclude?
A
- positive slope - larger = faster
