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Pickleball is rising in popularity as an ‘easier’ alternative to playing traditional tennis. There are many differences between the two sports. First, the dimensions of a pickleball court are much smaller than a tennis court (Picleball: 20’x 44’long, Tennis: 60′ x 120’long) thus the shear amount of running, cutting, and reaching is reduced in pickleball. As a biomechanist, you should have the tools to describe aspects of the biomechanics of the two sports using terms from angular kinematics and kinetics.  Describe the differences between serves in Pickleball (left image) versus Tennis (right image) where the longitudinal axis of rotation is estimated with a yellow line, and the center of mass (COM) of the player and their racket is estimated with the red circle. You must use the following terms at least once in your response: 1) moment of inertia, 2) center of mass, 3) axis of rotation, 4) mass, and 5)angular velocity and 6)linear velocity. You must comment on a) the differences both due to the motion of different serving types as well as b) the characterstics of each racket.  *the black line on the left indicates a rule in pickleball that the serve has to be executed below that line, which is based on a persons hip height. 

When traveling at a high constant velocity, acceleration is zero (regardless of direction).

Match the following definitions and concepts from fluid forces

Given the stick figure to the right, which angles would be considered segment angles?

You are working with a client on mat exercises and teaching them how how to perform a rear leg raise (or hip extension), beginning prone and on all fours in a ‘table’ position. You begin the client’s exercise with a straight leg with an added a 8lb ankle weight. When your client starts to lift their straight, weighted leg with poor form, how do you reduce the moment of inertia about the hip? Select all that apply

Angular velocity can be measured in what units? (Choose all that apply)

Angular velocity is depicted as what symbol

Select the appropriate response from the dropdown box: Pathologic murmurs [answer1].

The assessment finding that is NOT commonly associated with pleurisy is:

Select the appropriate response from the dropdown box: You hear an abnormal lung sound and are unsure if it is crackles or rhonchi. To help you distinguish between the two sounds, you should ask the patient to [action1].