Mastering Physics: Ch 07 HW (Part 1) Google Chrome session masteringphysics.com

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Mastering Physics: Ch 07 HW (Part 1) Google Chrome session masteringphysics.com 514760448 offset-next https://. Signed in as Isaac Lamberth l Help l cose A COLLEGE PHYS-203 fa2015 Ch 07 HW (Part 1) Impulse on a Baseball Resources previous l 6 of 21 next Impulse on a Baseball 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 x 10 s Learning Goal: To understand the relationship between force, impulse, and Part A momentum Assuming that this force is constant, what is the magnitude J of the impulse on the ball? The effect of a net force YF acting on an object is related Enter your answer numerically in newton seconds using two significant figures. 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 FAt The impulse is a vector pointing in the same direction as the force vector. The units of J are N. s or kg m/s Submit My Answers Give Up Recall that when a net force acts on an object, the object will accelerate, causing a change in its velocity. Hence the object's momentum (p mv) will also change. The 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 impulse-momentum theorem describes the effect that an he magnitude of the force versus time w ook like the one shown in impulse has on an object's motion Part B 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. For this graph, the Please Choose of the rectangle corresponds to the impulse F (N Give Up Submit My Answers Part C 12,000 This question will be shown after you complete previous question(s) (s) 0.0007 Part D This question will be shown after you complete previous question(s) 12:28 PM Search the web and Windows 11/3/2015

Explanation / Answer

Impulse (j) = F t

= 12000*0.70*10^-3

=8.4 Ns

b. the rectangular graph[f-t] shows that the force is constant over time so there is change in velocity with respect to time,hence change in momentum

and imulse = change in momentum

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