Hr_Ex_3_sol_F2009[1]

# Hr_Ex_3_sol_F2009[1] - PHYS190.002 Fall2009 Hour Exam#3...

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PHYS 190.002 Name Fall 2009 Hour Exam #3 November 23,2009 f o LuTlrtu l,ea( For problems marked OSE, use Otficial Starting Equations for full credit. This page /50 points llctal /200 (1,) 15 polntsl What have you learned so far this semestef? (A) Dont rg'ller skate in a butfalo herd. (B) Dont ask, don't telt. (G) Don't ask; don't know. (E[ Don't'bet ttre+ent money on UNLV football. (E) Allof the above. (2;) t20 pointsl A mass M is attached to a horizontal spring with spring constant k, as shown in the diagram above. The mass initially compresses the spring by a distance xr. The mass is then released from rest, and moves to the right untilthe mass leaves the spring (the mass is not attached to the spring). When the mass leaves the spring, it has speed 12 cm/s. Now repeat the experiment, but this time compress the spring by a distance 2 times xr. Now what is the speed of the mass when it leaves the spring? (A) 3 cm/s (B) 6 cm/s (C) 12 cm/s E) 48 cm/s (3.) t25 pointslA car of mass M has initial kinetic energy of 50,000

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## This note was uploaded on 06/04/2010 for the course PHYS 180 taught by Professor Farley during the Spring '10 term at University of Nevada, Las Vegas.

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Hr_Ex_3_sol_F2009[1] - PHYS190.002 Fall2009 Hour Exam#3...

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