Biomechanics Exam

A qualitative analysis requires:

• a framework within which skilled performances can be observed

  
  

• a set of principles within which movement can be analyzed

• a checklist to use when identifying errors

• techniques to use to correct errors in performance

  
  

• all of the above

Which of the following is an example of a first class lever:

• a pair of scissors

• a nutcracker

  
  

• a pair of tweezers

• a wheelbarrow

  
  

Which of the following is not a high-tech method of assessment used by biomechanists to collect numeric measurements of performance:

• computerized force-measuring platforms

  
  

• high-speed video recording

• electromyography

  
  

• computerized motion analysis

  
  

• none of the above

  
  

Internal forces refer to:

• forces generated by muscles pulling on bones

  
  

• forces acting from without, such as gravity

• forces from any body contact with the environment

  
  

• forces exerted across joint surfaces

  
  

•  both A and D

  
  

To represent the total body configuration for gross motor skills that occur in two dimensions, a _________ is used.

• stick figure model

• particle model

  
  

• rigid body segment model

•  composite diagram

 In general, the center of mass is located about _________ above the groin area.

• 3 inches

• 5 inches

• 6 inches

• 10 inches

Which of the following objects has the most inertia:

• a tennis ball

  
  

•  a 2-pound medicine ball

  
  

• a ping-pong ball

  
  

• a basketball

When a body moves on a circular path and in the same direction – but not at the same time – then the body is experiencing _________ motion.

• curvilinear

• angular

  
  

• general

  
  

•  both A and B

  
  

A combination of linear and angular motion is referred to as:

• translation

  
  

• rotation

  
  

• general motion

• curvilinear motion

The resistance arm (RA) is:

• the distance from the axis to where the force is applied

  
  

• the distance from the axis to where the resistance is applied

  
  

• the distance from the fulcrum to where the force is applied

  
  

• the distance from the fulcrum to where the weight is applied

• both B and D