MasteringPhysics: Course Ho E Mastering Physics: Ch 07 x Home I Chegg.com Q Phys
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Question
MasteringPhysics: Course Ho E Mastering Physics: Ch 07 x Home I Chegg.com Q Physics 101 exam 3 flashcard Q Physics 101 exam 3 flashcard Session masteringphysics.com/myct/itemVi assignment Problem 51476044&offset-next; Find on page re lying on bed and X No results Options Signed in as Chris Lowther Help I Close A COLLEGE PHYS-203 fa2015 Ch 07 HW (Part 1) Impulse on a Baseball previous 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 YFacting on an object is related both to Enter your answer numerically in newton seconds using two significant figures. 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 Fig N. s Submit My Answers Give Up F (N 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) 12,000 Part B 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 v of the rectangle corresponds to the impulse. 0.0007 Submit My Answers Give Up Part C 12:29 PM Ask me anything Ph 11/3/2015Explanation / Answer
PART A
impulse = J = F * t
= 12000 x 0.7 x 10^-3
= 8.4 Ns or 8.4 kg m/s
PART B
For this graph, the area of the rectangle corresponds to the impulse.