3. Christina is on her college softball team, and she is practicing swinging the bat. Her coach wants her to work on the speed and acceleration of her swing. She has a device that measures the linear velocity of the bat during the swing. Her bat is 0.85 m long. On her first swing, the linear velocity of the bat just prior to the swing is 0 m/s, and 0.15 s later, just prior to ball contact is 16 m/s. What is the average angular acceleration of the end of her bat during the swing?

The average angular acceleration is  

Explanation:

From the question we are told that

  From the question we are told that

        The length of the bat is  \

         The initial linear velocity is  

         The time is  

         The velocity at t is  

  Generally average  angular acceleration is mathematically represented as

        Where is the finial angular velocity which is mathematically evaluated as  

 and is the initial angular velocity which is zero since initial linear velocity is zero

               So

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.