You have a tennis ball that you throw directly upward with initial speed v. The ball rises to height h, then falls back down. At time t, you catch the ball when it is moving downward with the same speed v. Determine the average velocity of the tennis ball during this time interval.

   v_average =0

Explanation:

In kinematics the average speed defined with the distance interval traveled in a given time interval

           V = Δx /Δt

in this case the tennis ball travels a distance h to the highest point and a distance h from the highest point to the floor, so the distance you travel zero

      Dy = h -h = 0

therefore the average speed should be zero

         v_average =0

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.