21st Century Astronomy And Learning Astronomy By Doing Astronomy (fifth Edition)
5th Edition
ISBN: 9780393613360
Author: Laura Kay, Ana Larson, Stacy Palen, George Blumenthal
Publisher: W. W. Norton & Company
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Chapter 1, Problem 33QP
(a)
To determine
The distance travelled by the car in
(b)
To determine
The distance travelled by the car in
(c)
To determine
The distance travelled by the car in
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2. A car is traveling at a speed of 31 m/s.
a. What is its speed in kilometers per hour?
b. Is it exceeding the 90 km/h speed limit?
A physics student took a 4 hours car trip to visit a friend. In the first hour, he traveled 100 km at constant speed. In the two hours, he stopped after his car developed some trouble. In the last hour, he traveled 90 km.What was his average speed during
a. first hour
b. the last two hours
c. the entire trip?
How long will it take a boat, moving at 5.6 m/s, to travel 100 meters?
a.17.9 seconds. c. 0.056 seconds.
b. 100 seconds. d. 560 seconds.
Chapter 1 Solutions
21st Century Astronomy And Learning Astronomy By Doing Astronomy (fifth Edition)
Ch. 1.1 - Prob. 1.1CYUCh. 1.2 - Prob. 1.2CYUCh. 1.3 - Prob. 1.3CYUCh. 1 - Prob. 1QPCh. 1 - Prob. 2QPCh. 1 - Prob. 3QPCh. 1 - Prob. 4QPCh. 1 - Prob. 5QPCh. 1 - Prob. 6QPCh. 1 - Prob. 7QP
Ch. 1 - Prob. 8QPCh. 1 - Prob. 9QPCh. 1 - Prob. 10QPCh. 1 - Prob. 11QPCh. 1 - Prob. 12QPCh. 1 - Prob. 13QPCh. 1 - Prob. 14QPCh. 1 - Prob. 15QPCh. 1 - Prob. 16QPCh. 1 - Prob. 17QPCh. 1 - Prob. 18QPCh. 1 - Prob. 19QPCh. 1 - Prob. 20QPCh. 1 - Prob. 21QPCh. 1 - Prob. 22QPCh. 1 - Prob. 23QPCh. 1 - Prob. 24QPCh. 1 - Prob. 25QPCh. 1 - Prob. 26QPCh. 1 - Prob. 27QPCh. 1 - Prob. 28QPCh. 1 - Prob. 29QPCh. 1 - Prob. 30QPCh. 1 - Prob. 31QPCh. 1 - Prob. 32QPCh. 1 - Prob. 33QPCh. 1 - Prob. 34QPCh. 1 - Prob. 35QPCh. 1 - Prob. 36QPCh. 1 - Prob. 37QPCh. 1 - Prob. 38QPCh. 1 - Prob. 39QPCh. 1 - Prob. 40QPCh. 1 - Prob. 41QPCh. 1 - Prob. 42QPCh. 1 - Prob. 43QPCh. 1 - Prob. 44QPCh. 1 - Prob. 45QP
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- A car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it exceeding the 90 km/h speed limit?arrow_forward(a) A car speedometer has a 5.0% uncertainty. What is the range of possible speeds when it reads 90 km/h? (b) Convert this range to miles per hour. (1Km=0.6214)arrow_forwardHow LONG will it take a ship traveling at a constant velocity of 100 m/s to travel 800 meters? a. 8 seconds. b. 20 seconds. c. 50 seconds. d. 4 seconds.arrow_forward
- 1. A car starts from rest and attains a speed of 50 m/s in 15 seconds. a. How far has the car travelled in 15 seconds? b. What is the speed of car if it travels 567 meters?arrow_forwardA horse travels 65 km/hr with a distance of 5.98 km . a. How long does the horse travels? b. What is the new speed of the horse if he travels twice his time travelled?arrow_forwardHow far has a car traveled in 4 hours if it is constantly moving at 60 miles / hour? a.60 miles. b.4 miles. c. 64 miles. d. 240 miles.arrow_forward
- A car travels with an average speed of 8.00 meter/second. A. What is the speed in km/s? B. What is the speed in mile/hour? Hint: 1km =1000.0 metersarrow_forward1. What is the average velocity of an airplane that travels a distance of 10,500 meters in 40 seconds? a. 420 m/s. b. 300 mph. c. 262.5 m/s. d. 10,500 m/s.arrow_forwardYou slam on the gas of your racecar and you accelerate at 12 m/s² from rest. How long will it take you to reach a velocity of 48 m/s? a. 4 seconds. b. 2 seconds. c. 1 second. d. 12 seconds.arrow_forward
- A truck moves with a speed of 68 mi/h. how much is this speed in S.I. units? (1 mile = 1.609 km) O a. 30.39 m/s O b. 152.14 m/s O c. 30.39 km/h O d. 18.89 m/sarrow_forwardE2. A walker covers a distance of 1.4 km in a time of 30 minutes. What is the average speed of the walker for this distance in km/h? E9. A car travels with an average speed of 58 MPH. What is this speed in km/h?arrow_forwardA plane flies 150 km [N] and then 400 km [E]. What is the total displacement? a. 427 km [N21°E] b. 550 km [NE] c. 250 km [N21°E] d. 427 km [N69°E] How long does it take a car travelling at 22 m/s [N] to stop if it accelerates at 3.8 m/s² [S]? a. 84 s b. 5.8 s c. 0.17 s d. it will not stop An object initially moving at 10.0 m/s [N] ends up moving at 10.0 m/s [S] after a period of 12.0 s. What is the object's average acceleration during this period? a. 0.833 m/s² [S] b. 0.833 m/s2 [N] c. 1.67 m/s² [S] d. 0 An astronaut on the moon throws a wrench straight up at 4.16 m/s and 3.25 s later it is falling downward with a velocity of 1.14 m/s. What is the acceleration of the wrench after it leaves the astronaut's hand? a. 1.63 m/s² [down] b. 1.28 m/s² [down] c. 1.08 m/s² [down] d. 0.929 m/s² [down]arrow_forward
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