3SCÜm +1500m S -f-ö,gg

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1 Honors Physics Unit 2 Review Sheet Name Date Problems. Mike walks 500 m East, then he jogs 2 km in the same direction. After that, he turns around and walks km West where he stops to give someone directions. At the point of stopping his total time spent exercising was 30 minutes. Determine the distance, displacement, average speed and average. 50 m; n z IBOOS ( At) 3SCÜm +500m S -f-ö,gg 2. Arden drops a stone from rest from the top of a tall building. After 3.0 s of free-fall, how far has the ston 3. Jack's racecar starts from rest and has a constant of 0.0 m/s2. What are the (a) final velocities and (b) displacements of the dragster at the end of 2.0 s and at the end of.0 s? 2s eßh's a) t? (L.5). Shane's tram leaves station A and accelerates east at 0.5 m/s2. At the same instant as Shane's train leaves station A, Cam's train leaves station B, (which is.0 km east of A) and accelerates west at 0.25 m/s2. Relative to station A, where would the two trains collide? Assume they were on the same straight track. r Inal Qnscoer will c)qss ) 5. A fan powered cart has been given a push by Steph. The cart is moving + m/s when it leaves her hand. The fan slows the cart to a stop, then speeds it up in the other direction. Five seconds after the cart was released, the cart passes her, going - m/s. What did the cart have during these five seconds? = To avoid hitting a deer, Chase takes 6 seconds to bring his car to a stop from a speed of 2 m/s. a) What is the car's? b) How far does it take the car to stop? c) With the same as in part (a), what would be the car's stopping distance from an initial of 2 m/s? 7. A box of very expensive motion detectors falls out of the back of Ms. Chin's big red truck, and slides 62.5 m before stopping. Ms. Chin was driving east at 25 m/s when the box fell out. What was the box's (magnitude and direction) while it was slowing to a stop? 8. Aaron is driving along Anderson Road, traveling north at 25 m/s. Just before his car enters a speed trap, he notices a police car at the side of the road, and steadily slows the car as it moves through the 30 m long speed trap. At the end of the trap, the car's speedometer reads 5 m/s. (Assume that the car experienced constant while in the speed trap.) a) What was the car's in the speed trap? b) What was the car's average speed in the speed trap? c) How much time elapsed while the car was in the speed trap? 9. A supertanker (big ship that carries crude oil) is cruising east at 20 m/s. If the engines were shut off, the ship would travel 5 km before the speed of the ship would be reduced to m/s. At this speed, tugboats could be attached to tow the ship into port. a) What is the average of the ship while it is slowing down? 0.33 b) How much time does it take the boat to slow down to m/s? S c) If it takes the tugboat 5 minutes to pull the supertanker to port, what is the total displacement of the tanker during the period is slows down and the period it is pulled to shore? 6, Q.- paris (an-ed)

2 o time in seconds O a) Describe the motion in each section of the graph covts{-a-b-v S Sool-k) b) What is the object's from 3-5 s? c) What is its from.5 3s? ass d) At what time does the driver reverse direction? As e) During which interval is the car moving the fastest? f) Total Displacement? (-0 n 3fc.-yt-Y g) Total Distance A p-eas + ) {Cl'5s)ClO?) + ( (, + (Is) C + 2, Sm_ Choices are (speed up, slow down) 2. You are driving in the positive direction. If you accelerate in the positive direction, your car is. If you accelerate in the negative direction, your car is 3. While driving in the negative direction, accelerating in the positive direction will make your car Slow, while accelerating in the negative direction will make the car. How is it possible to have a negative and be speeding up? -he direc+l'ön ts 5. Is it possible to slow down once you've come to a complete stop? bv+ can sped up d Fcechorx 6. When something reverses direction, its always passes through what number 0

3 Graphing Review Sheet. A horizontal line on a X vs. T graph means the Object is ---S-T--P-R-P-E-.O A horizontal line on a V vs. T graph means the object is MOUlN6-LUU?f---COU-SrA/Vr 6. The slope of an X vs. T graph is its, the slope of a V vs. T graph is its *CCECERAfloN 7. What does a graph with a positive slope look like? How about a negative slope? O slope ṣ 8. What is happening when a line crosses the t-axis on a position time graph? 9. What is happening when a line crosses the t-axis on a time graph? e asses O V6LOC/TY n Oh. The area of a time graph tells you the d lace men +. a) Describe the motion in each section of the position graph. ) Nove se-å-f-i,y Faster D Move Nonh 30 corisfqh- ) Så-opped 25 b) How fast is the car going during section 2? Which direction? 20 position V averay 5 veloci Y 2 3 J os c) How fast is the car going during section 3? Which direction? 5 Vaver-aT e South 0 IOS d) How fast is the car going during section? 3) e) At what time does the driver reverse direction? L s 25s f) Total Displacement? g) Total Distance? d * 50M h) Average Velocity? VQbJ.era.9L i) Average Speed? (fotal) z 50 s 50 s

4 Graphs sped, (aed/'nq faster, direc+;ony d) ceåion 2 wards Oti if) 8 position Describe the motion of the object during each interval. 2. What is the position at 7 seconds? 2m 3. What is the average of the object from 0-3 s? / 3 S. What is the average of the object from 6-8 s? 5. Draw the v vs. t and a vs. t graphs that correspond to the above position vs. time graph. 9 Zero slope, \ eero O IR(oc.if-3, yugc{ne.. Describe the motion of the object during each interval. 2. How far did the object travel from 5 to s? see cu-eqs) (upt+llmø 3. During what interval(s) did it move with a constant? Include the value of the ḄS gs. Determine the magnitude and direction (sign) of the for all periods when the object accelerated. 5. Draw the x vs. t and a vs. t graphs that correspond to the above vs. time graph. Os g s: position -u & SS to US i q

5 Graphs sped, (aed/'nq faster, direc+;ony d) ceåion 2 wards Oti if) 8 position Describe the motion of the object during each interval. 2. What is the position at 7 seconds? 2m 3. What is the average of the object from 0-3 s? / 3 S. What is the average of the object from 6-8 s? 5. Draw the v vs. t and a vs. t graphs that correspond to the above position vs. time graph. 9 Zero slope, \ eero O IR(oc.if-3, yugc{ne.. Describe the motion of the object during each interval. 2. How far did the object travel from 5 to s? see cu-eqs) (upt+llmø 3. During what interval(s) did it move with a constant? Include the value of the ḄS gs. Determine the magnitude and direction (sign) of the for all periods when the object accelerated. 5. Draw the x vs. t and a vs. t graphs that correspond to the above vs. time graph. Os g s: position -u & SS to US i q

6 7. Draw a X vs. T and a V vs. T graph for the following scenario. o A car drives at a constant speed towards the origin for 5s. o It slows down towards the origin for 5s. o It is still for 5s. o It speeds up away from the origin for 5s. o It drives at a constant for 5s. slope, 6 slope, zero paralodicgzgfl % lop.q-.. O slop parablkl 5 20