Quarter 2, Blogpost #5

In addition to learning about linear momentum this week, we have also covered a second concept, impulse. Impulse is the force average multiplied by the length of time two objects are in contact and its SI units are N*s = kg* m/s. I know this example was given in the book, but my sister and I were practicing today so it seemed like itʻd be smart to just take my picture then haha (: So anyway, when the ball comes in contact with the bat, the force between the two rises rapidly to a very large value. Because it is extremely difficult to describe the way the force varies, what is looked at is the average force that is exerted by the bat and then it is multiplied by the length of time the ball and the bat were in contact. The total cycle of this scenario first takes place when the pitcher pitches the ball. The ball travels in the direction of the batter at a certain velocity. Both the bat and ball then come in contact with each other and what happens is (like I explained) the force between the two objects rise to very large values and then drops again to zero. Then the ball accelerates back toward the pitcher with a certain velocity in the opposite direction. Therefore, this is one of the easiest scenarios to help someone understand impulse.