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https://session.masteringphysics.com/myct/itemView?assignmentProblemID=52250904&offset-next; Copy of Homework assignments for General College Physics I HW Set 6 Problem 7.67 Signed in as fahad alkaltham |Help Close « previous 10 of 10 return to assignment Problem 7.67 Part A After a tornado, a 0.50 g straw was found embedded 2.6 cm into the trunk of a tree. f the average force exerted on the straw by the tree was 75 N, what was the speed of the straw when it hit the tree? Express your answer using two significant figures. 0 u= Submit My Answers Give Up ovide Feedback Continue

Explanation / Answer

Here ,

mass , m = 0.50 gm

force , F = 75 N

acceleration of the straw , a = Force /mass

a = 75/(0.5 *10^-3)

a = 1.5 *10^5 m/s^2

Using third equation of motion

0 - v^2 = -2 * 1.5 *10^5 * 0.026

v = 88.31 m/s

the speed of strawa was 88.31 m/s

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