Page 1 of 9 Name: Period: Chapter 2 DESCRIBING MOTION: KINEMATICS IN ONE DIMENSION (17 Problems) Complete problems below. SOLVE ALGEBRAICALLY first - then substitute in numbers on this paper - then plug into calculator ... (college board rubric) Write down 5-8 digits from your calculator Include units Vo = initial v = velocity at a Vavg = average d = displacement from origin = (x-Xo) velocity later time velocity (v2-v1) d(total) d = Vat + 1/2 at v = vo + 2ad v (t) = Vo + at avg At Vavg t(total) Do NOT use v = d/t Vavg=1/2 (v1+v2) only if time Do NOT use speed = distance/time is same for both speeds #1. You are driving home steadily at 65 mph for 130 #2. A complete round trip has the outgoing 200km miles. It then begins to rain and you slow to 55 mph. covered at 90km/h, followed by a one-hour lunch You arrive home after driving 3 hours and 20 break, and the return 200km is covered at 50 km/h. minutes. (203, 61) (55km/h, 0) Enter "givens " into table. out lunch return Total Part 1 Part 2 Total a 0 0 0 0 a 0 0 Vo Vo 008 180 A V inS S) .Bidop ax ox t Check which you pick for your coordinate system a) Complete the table. (go ahead and substitute Out is positive zero acceleration before using algebra) Return is positive a) Fill in the above table (show math for anything not given) leoos ell saw tartW b) Using the table values: how far were you originally from home? (you do NOT need to do more math) b) Average velocity of complete round trip c) What was your average speed?#4. A sports car accelerates from rest to 95 km/h #3. Two locomotives approach each other on in 6.2s. What is its average acceleration in m/s?? parallel tracks. Each has a speed of 95 km/h with respect to the ground. (4.3) Enter "givens" into table. led emoldong sislamo ) a) If they are initially 8.5km apart, many CHOJA 17 102 minutes before they reach each other? a (2. 7min) Vo V Enter "givens" into table. dx train 1 train 2 a 0 0 t DSVD Lofini Misolse Vo V x Ab Been TOV OC t emiflooruffelb - bosga seu TOM oct (go ahead and substitute zero acceleration before using algebra) S gningto enl ead gil bugs stelomoo A 081 To1 slam 30 ja vlibsste emorl privob sis uo ranui work-one s yo bewollot .minx08 is berev rigm ad of wole way bas mist of aniped norit ! OS bris embol & priveb offs emod avi 29 Islot muley donut juo O lalaT Sh89 1h89 #5. A sprinter accelerates from rest to 10.0 m/s #6. A car accelerates from 12m/s to 25m/s in in 1.35s. SHOW MATH: What is her acceleration 6.0s. Assume constant acceleration. Show in ... (7.4m/s, 9.6E4) xb algebra. (2.2m/s2, 1. 1E2m). Enter "givens" into table. Be careful of units a a Vo Vo iq woy doinw Hoedo V V elder ort oralarno dx sl evoda ardi ni Riq Enter "givens " into table. a) Find acceleration in m/s2(algebra then numbers) a) What was its acceleration? wey siew ist wod asulev elder ertl grey b) How far did it travel in this time? Viengno m crom ob b) Convert to -2 with dimensional analysis Sbooga epelevs nov esw JanyPage 3 of 9 #7. A light plane must reach a speed of 30.0m/s #8. A car slows down from a speed of 25.0m/s to for takeoff. How long a runway is needed if the (constant) acceleration is 3.0 m/s?? (1:5E2) mug rest in 5.00s. (63m) a a ASaND Vo techotom Vo meteve dx dx Enter "givens" into table. a) How far did it travel in that time? Be sure to t get algebraic solution for d in terms of Enter "givens" into table.Bob priol win givens only! Saw Shebeage erll rosen of smit rourn wold (B qmul of amrepnext erll exist li asob enol we b) Write the sign for the following velocity acceleration 9. A car traveling 45 km/h slows down at a constant 0.50 m/s2 just by "letting up on the gas". Calculate (1.6E2, 25, 12, 46, 10) Enter "givens" into table. a a) Find the distance in meters the car coasts before it stops 2'601 Solve for distance Algebraically first. Then substitute #s. Be Vo careful with + signs Is prillevent ed ispitto epilog sril lliw fest wil H Semit ard dx c) What total distance did it travel? The t Mile inolder. (problems 141 1 might help b) The time it takes to stop (Solve for t Algebraically first) c) The distance it travels during the first second (from t=0 to t=1) d) The distance travelled after four seconds (from t=0 to t=1) e) The distance it travels during the fifth second (from t=4 to t=5) )... do it algebraically firstPage #11. VERTICAL MOTION. A kangaroo jumps to #10. A speeding motorist traveling a constant a vertical height of 2.7m. How long was it in the a 120km/h passes a stationary police officer. The before returning to earth? (1.5s) officer accelerates at 10.0 km/h/s (note the mixed units). (24, 240 km/h) Check which you pick Motorist Police a for your coordinate Vo a system UP is positive Vo DOWN is positive V dx t a ) How long does it take the kangaroo to fall down? a) How much time to reach the speeder? eniwollot edto; nie en el b) How long does it take the kangaroo to jump vicolev up? "asp ent no qu phitiel va taut Salm] c) How long was it in the air going up and down? egole fi enoted alenoo To sell are em ni sonalelo oril bnit b) How fast will the police officer be traveling at d) What was the kangaroo's take-off speed? this time? brooes Janik orb pauly sloveni )i consialb