A skilled volleyball player uses elbow motion (as well as shoulder motion) in a jump serve....

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Physics

A skilled volleyball player uses elbow motion (as well asshoulder motion) in a jump serve. With her shoulder positioned andmaintained in flexion (about 100 degrees), a server initiallystarts the preparatory phase by flexing the elbow. At this time,the angular velocity of the elbow is 800 deg/s in flexion(positive) direction. As the server moves to strike the ball, theelbow undergoes extension, and immediately before the strike withthe ball, the elbowâ€™s angular velocity is 1500 deg/s in extension(negative direction). This change in angular velocity at the elbowjoint occurs in 0.3 seconds. Which of the following statementsis/are true about the angular acceleration of the elbow joint?Select statement(s) that is/are true. [1 pt.]
Group of answer choices
The elbow's angular acceleration is a positive value
The elbow's angular acceleration is a negative value
The elbow joint movement is speeding up
The elbow joint movement is slowing down

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3.9 Ratings (524 Votes)

I have indicated the figure of server while he is going to theballThe figure have three parts which indicates the completeprocess happening during the serving of the ball We want to tofocus on See Answer

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