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# 0 ms when entering the intersection a 6pt what was the

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Unformatted text preview: 0 m/s when entering the intersection. a) [6pt] What was the speed of the Volkswagen just before the collision? Conservation of momentum implies that , where and are the momenta of the Cadillac and Volkswagen, respectively, and is the final momentum. The geometry is as shown in the figure, with The figure shows that so we find that 3 b) [6pt] What was the speed of the two cars together the instant after the collision? Referring again to the triangle above, so Alternatively, the Pythagorean theorem can be used to obtain leads to , which c) [5pt] How much kinetic energy was lost in the collision? (This energy would have done work – damage – on the vehicles, and could also be converted to heat, vibrations, sound, and other forms of energy.) *If you don’t have an answer to (a) and (b), you may assume they were 20 m/s and 10 m/s, respectively, when answering this question.] The initial kinetic energy of the Cadillac is The initial kinetic energy of the Volkswagen is The final kinetic energy is Then 4 3. [16pt] Answer these multiple-choice questions by circling the correct letter. Showing your work is not required, but partial credit is possible if you show your work. (a)...
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## This document was uploaded on 03/09/2014 for the course PHYS 221 at Ohio Northern University.

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