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# Non PHYS 2010

MTSU

GPA 3.61

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This 5 page Class Notes was uploaded by Gilda Wisozk on Wednesday September 23, 2015. The Class Notes belongs to PHYS 2010 at Middle Tennessee State University taught by Nathan Lowhorn in Fall. Since its upload, it has received 35 views. For similar materials see /class/213132/phys-2010-middle-tennessee-state-university in Physics (Mtsu And Rodp) at Middle Tennessee State University.

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Date Created: 09/23/15

DCUUPIC ICDL 1 raga 1 U1 1 Sample Test 1 The following test is provided for your convenience only It in no way implies coverage or level of dif culty for any test that you may take in your class It is simply provided as a means for you to assess your facility with the material in lectures 1 through 5 The answers to the test questions not the solutions can be accessed by a navigation button at the end of this test Sample TEST 1 The following test consists of two parts Part 1 contains 10 multiplechoice problems worth 3 points each Circle the letter of the best answer You should spend no more than 10 minutes on the multiplechoice problems Part 11 contains 5 problems worth a total of 70 points There will be no partial credit awarded for the multiplechoice problems To receive full credit on the problems all reasoning must be shown and your answers must have the appropriate units Start your problem solutions by writing down the basic de nitions or equations that you are using in your solution using symbols Keep numbers out of your equations until as late in your solutions as possible This will increase the likelihood of receiving partial credit for your solution Be careful be concise but be complete You have 50 minutes to complete this exam Budget your time accordingly PART 1 Multiple Choice Choose the best answer 3 points each 1 The instantaneous velocity is the same as the average velocity when a the direction doesn t change b the acceleration is zero c the Change in velocity is uniform d the velocity reaches a maximum value e the velocity is zero 2 What condition must be met in order for the four kinematic equations to be valid a The acceleration must be constant b The acceleration must be zero 0 The velocity must be constant 1 The velocity must be zero e The motion must be uniform 3 You walk 5 m to the right in the positive x direction then immediately turn around and walk back to where you started This whole process takes you 12 5 What was your average speed during thisjourney a 0 ms b 12 ms c 12 ms 1 083 ms e 083 ms 4 What was your average xcomponent of velocity in the previous problem httpmtsueduphy32010LecturesPart1L1 L5SampleTestlbodysa1npletest 1302008 OCUIIPIC l 531 1 I ng A U 139 a 0 ms b 12 ms c 12 ms d 083 ms e 083 ms 5 An object is measured to travel a distance of 31 m in a time of 28 s The uncertainties in the distance and time measurements are 03 m and 02 s respectively What is the Fractional Uncertainty of the distance measurement a 002 b 005 c 007 d 008 e 01 6 The object s average speed in the previous problem is found to be a 022 ms b 058 ms c 11ms d 23 ms e 36 ms 7 The uncertainty in the average speed found above is a 01 ms b 03 ms c 041115 d 06 ms e 08 ms 8 We spent some time in class studying and acting out x vs t and VA vs I graphs Let s say that we are looking at an x vs I graph We notice that it starts off curved and then reaches a region of constant slope that is a straightline region What can you conclude about the object s motion a It has a constant acceleration so the kinematic equations can be applied b It starts off with a nonzero acceleration and then reaches a constant velocity region c It starts oft with a constant velocity and then reaches a constant acceleration region d Its velocity is approximately unifonn throughout the region studied e Only that its motion is lD and always positive 9 You and a friend are leaning over a high balcony each of you is holding a baseball You each throw your baseball as hard as you can you throw your baseball directly downwards while your friend throws hers directly upwards Immediately after each of you release your respective ball which ball has the greater acceleration a Neither both balls have the same acceleration b Your ball does since it will obviously hit the ground rst c Your friend s ball does since it is thrown in the positive direction 1 Not enough information is given since the initial speeds of the balls must be known e Not enough information is given since the positive direction must be known 10 Let s say that the two balls in the previous problem were thrown with the same initial Speed but of course in opposite directions Which ball hits the ground the hardest a Neither both balls hit the ground with the same speed b Your ball does since it was thrown towards the ground c Your friend s ball does since it moved up to a greater height and thus fell nther before hitting the ground d Not enough information is given we must rst know the height of the balcony 6 Not enough information is given the positive direction must be known rst PART II Problems Show all of your work to receive full credit httpmtsueduphy5201 0LecturesPart1Ll L5SampleTestl body sampletest 13 02008 omupic l 6539 1 ragc 3 01 139 1 l5 points One lightyear lyr is defined to be the distance traveled by light in a vacuum during a time of one year The speed of light is 186000 mis Find the equivalent of 10 yr in units of mm l mi 5280 ft 2 15 points You throw a baseball straight upwards from a window which is 65 m above the ground At its highest point the ball is 102 m above the ground a What was the speed of the ball the instant it left your hand b What was the acceleration of the ball the instant it reached its highest point 3 15 points You wish to approximate the volume of your computer monitor The monitor is not exactly in the shape of a rectangular box but by fudging a couple of the dimensions you think that you can come up with a relatively good approximation of its volume by treating it as a box As a result of having to eyeball the dimensions of a box that would have the same volume as your monitor your uncertainties in the various dimensions are different You obtain the following results Length L42i3cm Width W35ilcm Height H28i3cm What value for the volume and its corresponding uncertainty do you calculate Keep all distances in units ofcm 4 10 points The following graph shows a plot of the distance D traveled by a peculiar object in m as a function of the cube of the time of travel I3 in 53 Find the equation of the linear behavior displayed by these data Please boxin your nal result Watch your units Distance vs Tlmecubed 390 380 370 360 Distance D In 350 340 51015 20 25 30 35 5 Tum cased 55 3 n 5 15 points Two cars travel through an intersection in the same direction on along straight road with the same speed of 23 ms The blue car is accelerating at 070 msz while the red car continues on with constant velocity httpmtsueduphys2010LecturesPart1L1L5Sample Test1bodysampletestu 1302008 oaulylu 1 cm 1 rage 01 a How far apart are the two cars 85 s after passing through the intersection b What is the ratio of their speeds vblucx39md at the time in part a httpmtsueduphy82010LecturesPart1L1 L5SamplewTest1bodysamp1etest 13 02008 AIIDWCID L 1 1 Answers to Sample Test 1 Make sure that you understand how to show your reasoning in the problems this will maximize the points that you get from partial credit Also make sure that you understand shy each of the multiple choice answers given below is the best answer even though more than one answer may of cially be correct PART 1 Multiple Choice lb 2a 3d 4a 5e 6c 7a 8b 921 103 PART 11 Problems 1943 x 391018 mm 2 a 85 ms b 98 ms2 toward the center of the earth 3 41000 4000 cm3 4 D 22 3 319 m S 5 a 253 rn b 126 httpmtsueduphys2010LecturesPart1L1L5SampleTest1AnswersSTlbod f gClUll 1302008

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