Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance Dд beyond the starting line at t=0. The starting line is at x = 0. Car A travels at a constant speed vд. Car B starts at the starting line but has a better engine than Car A, and thus Car B travels at a constant speed up, which is greater than VA

Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance Dд beyond the starting line at t=0. The starting line is at x = 0. Car A travels at a constant speed vд. Car B starts at the starting line but has a better engine than Car A, and thus Car B travels at a constant speed up, which is greater than VA

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 71P: A diver bounces straight up from a diving board, avoiding the diving board on the way down, and...

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2.) A subway train starts from rest at a station and accelerates at a rate of 2.50 mls for 15.9b seconds. H then runs at a constant specd of 35 seconds and then slows down at a rate of 4.50 ml s² until it sto ps at the next station? Q) what is the speed of the frain to finish tħ before It starts slo wing down? Given: Solution: Vi: o mis a: 2.50 m Is² At:15.90 seconds. Vp: (o mls) + (2.50 mls²)( 15.90 s) : 39.75 mls Requined: Equation: Vf = Vi t a At %3D b.) How long did it take the train to finish the trip from one station to the other ? Given: Vf= 39.75 mls t1= 15.90 s solution 0: 39.75 mls - 4.50 ml S*ts : 4.50 m Is² to=89.75 mls = to: 39.75 m ls 4.50 mlsz : 8.83s Requinud: Total time (t) t: s t 8.83 s 15.90s 35S 59.73s Equation: t: tit tz t t3 to: Vf.
Michael, the regional manager of a mid-sized paper company innortheastern Pennsylvania, must drive to The Office every day for work.During his morning commute, he drives an average of 25 mph due East for15 minutes to exit his neighborhood, then turns 45o N of E onto I-81, wherehe drives at 70 mph for 5 more minutes. Finally, he exits I-81 and drives at30 mph at 45oS of E for 5 minutes before pulling into Scranton BusinessPark at 1725 Slough Avenue.a. What is his total distance traveled?b. What is his average speed?c. What is his displacement from home when he arrives at work?d. What is his average velocity?
Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance DADAD_A beyond the starting line at t=0t=0. The starting line is at x=0x=0. Car A travels at a constant speed vAvAv_A. Car B starts at the starting line but has a better engine than Car A, and thus Car B travels at a constant speed vBvBv_B, which is greater than vAvAv_A. 2.) How far from Car B's starting line will the cars be when Car B passes Car A? Express your answer in terms of known quantities. (You may use tcatchtcatcht_catch as well.)
On a hot day in the flats, thetemperature is 106.2 degrees. A driver finds anempty, flat stretch of desert that is 1913 meterslong and decides to push the limits of his car. He finds the car can accelerate from O to 60 mph(26.8 m/s) in 4.95 s. Now he wants to see howfast the car can go. Assume the car maintains thesame average acceleration until it reaches its tokspeed of 87.9 m/s. (a) How long will it take the car to reach its topspeed?(b) How far will the car travel before it reaches itstop speed?
Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance DADAD_A beyond the starting line at t=0t=0. The starting line is at x=0x=0. Car A travels at a constant speed vAvAv_A. Car B starts at the starting line but has a better engine than Car A, and thus Car B travels at a constant speed vBvBv_B, which is greater than vAvAv_A. 1.) How long after Car B started the race will Car B catch up with Car A? Express the time in terms of given quantities.
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A seagull can fly at a velocity of 9.00 m/s in still air. (a) If it takes the bird 20.0 mm to travel 6.00 kin straight into an oncoming wind, what is the velocity of the wind? (b) If the bird turns around and flies with the wind, how long will it take the bird to return 6.00 km?
A diver bounces straight up from a diving board, avoiding the diving board on the way down, and falls feet first into a pool. She starts with a velocity of 4.00 m/s and her takeoff point is 1.80 m above the pool. (a) What is her highest point above the board? (b) How long a time are her feet in the air? (c) What is her velocity when her feet hit the water?
Problem 2. The speed of a motorhoat in still waler is lour times the speed of a river. Normally, ihe motorboat takes one minute to cross the river to the port straight across on the other bank. One time, duc to a motor problem, it was not able to run at full power, and it took four minutes to cross the river along the same path. By what facior was the specd of the hoat in still water reduced? (Assume that the speed of the water is uniform throughout the whole width of the river.)
The planetary model of the atom pictures electronsorbiting the atomic nucleus much as planets orbit the Sun. Inthis model you can view hydrogen, the simplest atom, ashaving a single electron in a circular orbit 1.06×10−10 m indiameter. (a) If the average speed of the electron in this orbitis known to be 2.20×106 m/s , calculate the number ofrevolutions per second it makes about the nucleus. (b) Whatis the electron’s average velocity?
You are driving your car uphill along a straight road. Of Suddenly, you see a car go through a red light and enter the intersection, just ahead of you. you. You immediately apply your brakes and skid straight to a stop, leaving a 100 ft long mark from the landslide. A policeman observes the whole incident, give the driver of the car a ticket for running a red light. He also gives a ticket to you for exceeding the 30 mph speed limit. When you get home, you read your physics book and you may notice that the coefficient of kinetic friction between the tires and the road was 0.60, and the coefficient of static friction was 0.80. You estimate that the hill makes an angle of about 10° with the horizontal. Check the manual owner and find that your car weighs 2,050 lbs. Are you going to claim the traffic ticket? in the court? Support your argument. Please type answer not write by hend
With ajstarting speed jof 31 kph at point A, a car accelerates uniformly. After 19 minutes, it reaches point B, 21 km from A. Find the acceleration of the car in m/s^2. ROUND OFF TO FOUR DECIMAL PLACES.