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PHY183-Lecture09pre-1

# PHY183-Lecture09pre-1 - Shoot the Monkey Scenario A...

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1 January 25, 2012 Physics for Scientists&Engineers 1 1 Physics for Scientists & Engineers 1 Spring Semester 2012 Lecture 9 Maximum Height and Range January 25, 2012 Physics for Scientists&Engineers 1 2 Shoot the Monkey Scenario: A zookeeper needs to tranquilize a monkey that has escaped. The monkey is hanging from a branch in a tree. The zookeeper aims directly at the monkey and pulls the trigger on her dart gun. The sound of the dart gun startles the monkey, who lets go of the branch when he hears the gun go off. Shoot the Monkey Illustration January 25, 2012 Physics for Scientists&Engineers 1 3 January 25, 2012 Physics for Scientists&Engineers 1 4 Slow Motion Replay Because everything happened so fast, here is a super slo’ mo’ replay A Walk in the Woods Problem Suppose you take a short hike in the woods. On the first leg of your walk, you travel 100. m due east. On the second leg, you travel 200. m at an angle of 45.0 degrees west of due north. What is your total displacement? THINK Displacement is a vector. Need its magnitude Need its angle relative to due east We can add these two displacements using the component method of vector addition January 25, 2012 Physics for Scientists&Engineers 1 5 A Walk in the Woods (2) SKETCH January 25, 2012 Physics for Scientists&Engineers 1 6

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