Phys121 Final 2010

Phys121 Final 2010 - Phys121/S10/Hassam/Final Name...

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Phys121/S10/Hassam/Final Name: ________________________________ Signature: ______________________________ Seat Number: ______________________________ 1. Closed Book. Only 2 sheets of paper (double sided) allowed 2. Put final answers into the boxes provided. Show essential work next to box. 3. Express all your answers using two significant figures, if needed. 4. Use reverse sides for scratch work. 5. After you finish the exam, write and sign the Honor Pledge in the box below: “I pledge on my honor that I have not given or received any unauthorized assistance on this exam” g = 9.8 m/s 2 Newton’s Gravitation Law: F = Gm 1 m 2 /(distance) 2 Problem Max score Score Problem Max score Score 1 10 7 25 2 10 8 10 3 15 9 10 4 25 10 10 5 15 11 20 6 25 12 25 Max=200

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Problem 1 A car travels at constant speed along the curved path shown in the figure below. Five possible vectors are also shown in the figure; the letter E represents the zero vector. Which vector best represents the car's velocity at position 1? Which vector best represents the car's acceleration at position 1? Which vector best represents the car's velocity at position 2? Which vector best represents the car's acceleration at position 2? Which vector best represents the car's velocity at position 3? Which vector best represents the car's acceleration at position 3? Problem 2 The figure below shows block A sitting on top of block B.
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