Biomechanics Chapter 9 Concepts

The buoyant force acting on a body is equal to the weight of the fluid displaced by the body: is the definition of...

• Bernoulli's Principle

• Magnus Effect

• Archimedes's Principle

• Drag

Friction in adjacent layers of fluid near a body moving through the fluid: is the definition of...

• Bernoulli's Principle

• Magnus Effect

• Archimedes's Principle

• Drag

Deviation in the trajectory of a spinning object toward the direction of spin: is the definition of...

• Bernoulli's Principle

• Magnus Effect

• Archimedes's Principle

• Drag

The inverse relationship between relative velocity and relative pressure in a fluid flow: is the definition of...

• Bernoulli's Principle

• Magnus Effect

• Archimedes's Principle

• Drag

How many degrees are in a radian?

• 0

• 180

• 360

• 57.3

In the drag formula; why is velocity such an important factor.

• The slower you go the greater drag force.

• Doubling the velocity increases drag by four.

• Velocity is divided by the surface area.

• Velocity doesn't matter, only surface area matters

How does a spoiler on a car work?

• It has no effect, it just looks cool.

• High velocity air causes lift reducing the car's weight.

• High velocity air causes downward force, increasing traction.

• The spoiler is used for towing other cars.

Which statement is FALSE regarding drafting

• Drafting allows the group to travel at faster speeds.

• Drafting prevents followers from experiencing drag force.

• Drafting gives the first person/car an advantage.

• Drafting allows for less energy to be used.

How does the angle of an air foil influence lift?

• Angle doesn't matter.

• Air resistance on the bottom of the air foil causes lift.

• Air resistance on the bottom of the air foil cause a drag force.

• My dog is barking at me.

Why does a helium balloon float?

• Helium is heavier than air.

• Water is heavier than helium.

• Water and helium don't mix.

• Helium is lighter than air.