A 0.30 kg baseball is traveling at 40 m/s toward the batter. The ball is hit by the bat with a force of 300N, and is now headed toward the pitcher at 25 m/s. How long was the bat in contact with the ball?

The discovery of the electron as a subatomic particle was a result of

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in