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 elbow’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
