You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65 mi/h), and the trip takes 1 h and 50 min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 69 km/h (43 mi/h). ▾ Part A How much longer does the trip take? Express your answer in minutes. t= 17 —| ΑΣΦ ? min

You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65 mi/h), and the trip takes 1 h and 50 min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 69 km/h (43 mi/h). ▾ Part A How much longer does the trip take? Express your answer in minutes. t= 17 —| ΑΣΦ ? min

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by = [5.00 m/s - (0.0180 m/s³)t²] i + [2.00 m/s + (0.550 m/s²)t]j. v = 7.00 Submit Previous Answers ✓ Correct Part D What is the direction (in degrees counterclockwise from +-axis) of the velocity of the car at t = 6.50 s? Express your answer in degrees. 0₂ = 52.7 ° Submit ✓ Part E a = Previous Answers Correct What is the magnitude of the acceleration of the car at t = 6.50 s? Express your answer with the appropriate units. 0.357 Submit μÀ m S ? Check the units used in your calculation; the numerical value you reached does not appear to have dimensions of acceleration. No credit lost. Try again. Previous Answers Request Answer
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O IN "||3v% . What is the dimension of k in the equation T = k sine, where m is the mass, a is the ma acceleration ([a]= LT-2) and t is the time. The dimension of t is given as ML2T-2. Select one: O MLT? O LT-2 O LT? O MLT-2 Clear my choice 面

Part A At an air show, a jet plane has velocity components v₂ = 725 km/h and v₁ = 455 km/h at time 4.85 s and v = 843 km/h and vy = 385 km/h at time 7.47 s. For this time interval, find the component of the plane's average acceleration. ΑΣΦ ax = 45.04 ? km/h² You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer Part B For this time interval, find the y component of the plane's average acceleration. ΑΣΦ ay = -26.72 Submit Previous Answers Request Answer × Incorrect; Try Again Part C ? km/h² For this time interval, find the magnitude of its average acceleration. a = ΑΣΦ Submit Request Answer Part D ? km/h² For this time interval, find the direction of its average acceleration. θα ΑΣΦ ? ° clockwise from +x axis
1. A police car at rest is passed by a car travelling at 120 km/h. Three seconds after the car passes, the police car puts on its sirens and accelerates uniformly until it catches the car 1200 m down the road. What is the acceleration of the police car and how long does it take to catch the car? n to travol
You're driving down the highway late one night at 20 m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 10 m/s². Part A How much distance is between you and the deer when you come to a stop? Express your answer in meters. ΨΗ ΑΣΦ 340 EPPINE ? Previous Answers Request Answer Submit X Incorrect; Try Again. m 27
2. V A particle moves according to the equation ¤ = 10t², where is in meters and t is in seconds. (a) Find the average velocity for the time interval from 2.00 s to 3.00 s. (b) Find the average velocity for the time interval from 2.00 to 2.10 s.
A car is traveling around a circular track of 790-ft radius. If the magnitude of its total acceleration is 17.1 ft/sec² at the instant when its speed is 57 mi/hr, determine the rate a, at which the car is changing its speed. Answer: ai ft/sec²
ng A woman is on a train leaving the station at 3.0 m/s, while a friend waving goodbye runs alongside the car she's in. Call the train's direction of motion the + direction. ▼ Part B Once the train has reached a speed of 10 m/s, how fast must the woman walk, and in which direction, to keep up with her friend? Express your answer with the appropriate units. VIw= Submit μÀ Value 3 @ m S O Previous Answers Request Answer Review ?
C Welcome to MyTCC X KPhysics 1 Chapter 2 Problem 2.82 0 Type here to search Content You shoot an arrow into the air. Two seconds later (2.00 s) the arrow has gone straight upward to a height of 31.0 m above its launch point. A A https://session.masteringphysics.com/myct/itemView?assignment ProblemID=180595496# d+ X I J C Mastering Physics: Physics X C L v0 = 25.3 m/s Submit Part B ✔ Correct t = Provide Feedback How long did it take for the arrow to first reach a height of 15.5 m above its launch point? Submit Previous Answers % VE ΑΣΦ ℗ 2.7: Freely Falling Objects X 2.2: Averag Request Answer W 0 C Y ? S 45°F Cle.
Please answers parts a and b