Physics 1070 / Exam 1 [Form-A] Summer I 2007 Page 2NOTE: This is NOT a Sample Exam… (30,000 points) Multiple-Guess-Fill-In-The-Bubbles1.)(a) Jerry drives his car for 2.00 miles at 40.0 mph. How many minutes does it take to travelthis distance? The handy chart at left may be useful. 90.0 sec/mile × 2 miles = 180 sec = 3min.A = 2.00 min B = 3.00 min C = 4.00 min D = 5.00 minE = 6.00 min F = None of these(b) Janet drives her car for 4.00 miles accelerating from rest to 80.0 mph. How many minutesdoes it take to travel this distance? Average speed = 40 mph, so 4 miles in 6 min.A = 2.00 min B = 3.00 min C = 4.00 min D = 5.00 minE = 6.00 min F = None of these(c) Juan drove 1.00 mile accelerating from rest to 80.0 mph and then 1.00 mile decelerating from80.0 mph back down to zero. How many minutes does it take? Average speed = 40 mph, so 2miles in 3 min.A = 2.00 min B = 3.00 min C = 4.00 min D = 5.00 minE = 6.00 min F = None of these(d) Joanne drives 2.00 miles at 40.0 mph, 3.00 miles at 90.0 mph and 2.00 miles at 120. mphHow many minutes does it take? (2 × 90.0 sec) + (3× 40.0 sec) + (2×30.0 sec) = 360sec = 6.00 min.A = 2.00 min B = 3.00 min C = 4.00 min D = 5.00 minE = 6.00 min F = None of theseFor each of the following, select the answer A-D that BEST represents the motion.(e) Diane is waiting for the elevator to arrive. This is an example of __________ Motion.A = No B = Uniform C = Constant AccelerationD = None of these(f) Diane is standing in the elevator when it starts from rest. This is an example of __________ Motion.A = No B = Uniform C = Constant AccelerationD = None of these(g) Diane walks to her class. This is an example of __________ Motion.A = No B = Uniform C = Constant AccelerationD = None of theseFor each of the following, select the answer A-F that BEST represents thequantity.(h) Darryl tosses a football in a ballistic arc with v0 x = 9.81 m/s. While it is going up, the acceleration of thefootball in the x-direction is ____________.A = +9.81 m/s B = +9.81 m/s² C = 0D = -9.81 m/s E = -9.81 m/s² F = None of these.(i) The acceleration of the football in the x-direction at the turning point is ________.A = +9.81 m/s B = +9.81 m/s² C = 0D = -9.81 m/s E = -9.81 m/s² F = None of these.(j) When the football comes back down to Darryl’s twin Larry, the x-component of the velocity is ________ .A = +9.81 m/s B = +9.81 m/s² C = 0D = -9.81 m/s E = -9.81 m/s² F = None of these.mph sec25 144.030 120.035 102.940 90.045 80.050 72.055 65.560 60.065 55.470 51.475 48.080 45.085 42.490 40.095 37.9100 36.0105 34.3110 32.7115 31.3120 30.0125 28.8130 27.7135 26.7225 16.0! e # $ % &! " # $ h &! e # $ % &! " # $ h &d " # $ % &! " f $ % &! e # $ % &! " f $ % &! " f $ % &d " # $ % &Physics 1070 / Exam 1 [Form-A] Summer I 2007 Page 3“This is a Real Duzy!” (35,000 points)2.) (a) The Model J Duesenberg, built from 1929 to 1936, was a powerful and expensive luxury car capable ofgoing 116 mph (51.8 m/s). If the Duesenberg accelerates from rest to 51.8 m/s in 16.2 seconds, find theacceleration, a.v v at at or avtavtmsms=+ = === =0251816 23200DD./.sec./(b) How far does the Duesenberg travel in this time? This can be found with or without the answer to (a).xx vt atxat msm=+ +===0012212212223 200 16 2419 9./ .sec.chbgORvv axxvaxxvamsmsm2020222222251823200419 3=+ -=== =()././.bgchOR use average speed d = v t = (25.90 m/s) (16.2sec) = 419.6m(c) What is the average speed of the Duesenberg while it is accelerating?vdtmms===419 916 225 92..sec./ OR vvvv msmsave=+===022518225 90././(d) It is 204 km (204,000 meters) from here to Detroit. If you could drive your Duesenberg at 116 mph (51.8m/s) without stopping, how long would it take you?vdttdvmmshour=====204 0005183938 1 5 38,./sec min secbg(e) Halfway to Detroit, however, you stop at Burger King to pick up a double cheeseburger off the Dollar Menu.The stop adds 8.00 minutes to your trip. What is your average speed for the whole trip, including this stop?vdtmms==+=204 0003938 4804616,sec .sec./bgIt’s still 103.3 mph, though. (grin)Physics 1070 / Exam 1 [Form-A] Summer I 2007 Page 4Travel Into The Mysterious Second Dimension! (35,000 points)3.) Sandra is out running and goes up a flight of stairs. The stairs go up a height of2.00 meters and over a horizontal distance of 3.35 meters. If she takes 1.11 secondsto go up the stairs, find (a) the x-component of her velocity, vx , …vdtmms== =3351113 018..sec./(b) the y-component of her velocity, vy , …vdtmms== =2001111802..sec./and (c) her vector velocity rv in Standard Form .vvv ms msmsvvmsmsvmsxyyx=+= +==FHGIKJ=FHGIKJ=°=°--2222113018 180235151802301830 83515 308./ ././tan tan././../@.bgbgqrPhysics 1070 / Exam 1 [Form-A] Summer I 2007 Page 5Running along the upper level at v0x = 6.00 m/s, Sandra leaps straight out and landson the ground 2.00 meters below. (d) How much time does it take for her to fall tothe ground?yy vt gtygtygttygtygmmsy=+ -=-==== =00122012201222002022220098106386../.secbg(e) What is her final vy just before she lands on the ground? This can be found with or without the answer to (d).v v gt gtmsmsyy=-=-=-=-029 81 0 63866265./ . sec./chbgORvv gyygy gyvgy msmms msyyy20200002220 2229812006264 6264=- -=- - ====± =-()()./ ../