Impulse on a Baseball Learning Goal: To understand the relationship between forc
ID: 1436492 • Letter: I
Question
Impulse on a Baseball Learning Goal: To understand the relationship between force, impulse, and momentum. The effect of a net force summation F acting on an object is related both to the force and to the total time the force acts on the object. The physical quantity impulse J is a measure of both these effects. For a constant net force, the impulse is given by J = F Delta t. In Parts A, B, C consider the following situation. In a baseball game the batter swings and gets a good solid hit. His swing applies a force of 12,000 N to the ball for a time of 0.70 Times 10^-3 s. Assuming that this force is constant, what is the magnitude J of the impulse on the ball? Enter your answer numerically in newtron seconds using two significant figures. We often visualize the impulse by drawing a graph showing the force versus time. For a constant net force such as that used in the previous part, the graph showing the magnitude of the force versus time will look like the one shown in (Figure 1). The magnitude of the net force versus time graph has a rectangular shape. Often in physics geometric properties of graphs have physical meaning.Explanation / Answer
formula for impulse is
J = Ft
= 12000 N ( 0.7 * 10^-3 s)
= 8.4 N s
(B)
area of the rectangle from the graph corresponds to impulse