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2. A woman on a bicycle climbs a hill at 4.00 m/s and then returns down the same hill at 8.00 m/s. What is her average speed for the entire trip? 20 0

2. A woman on a bicycle climbs a hill at 4.00 m/s and then returns down the same hill at 8.00 m/s. What is her average speed for the entire trip? 20 0

College Physics
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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No. 2
1. Assuming the speed of sound at a certain temperature is 343m/s. Compute the distance of the source of sound from a barrier if the echo of the sound is heard after 3.00 seconds. 2. A woman on a bicycle climbs a hill at 4.00 m/s and then returns down the same hill at 8.00 m/s. What is her average speed for the entire trip? 3. An airplane accelerates on a runway at 4.00 m/s² for 30.0 s until it finally lifts off the ground. Determine the distance traveled before take-off. 4. A bike accelerates uniformly from rest to a speed of 8.00 m/s over a distance of 40.0 m. Determine the acceleration of the bike. 5. A car traveling at 30.5 m/s skids to a stop in 3.20 s. Determine the skidding distance of the acceleration. car assuming uniform 6. A bus travels 504.0 m between two stops. It starts from rest and accelerates at 1.50m/s² until it reaches a velocity of 9.00 m/s. The bus continues at this velocity and then slows down at 2.00m/s? until it comes to halt. Find the total time required for the journey.
Transcribed Image Text:1. Assuming the speed of sound at a certain temperature is 343m/s. Compute the distance of the source of sound from a barrier if the echo of the sound is heard after 3.00 seconds. 2. A woman on a bicycle climbs a hill at 4.00 m/s and then returns down the same hill at 8.00 m/s. What is her average speed for the entire trip? 3. An airplane accelerates on a runway at 4.00 m/s² for 30.0 s until it finally lifts off the ground. Determine the distance traveled before take-off. 4. A bike accelerates uniformly from rest to a speed of 8.00 m/s over a distance of 40.0 m. Determine the acceleration of the bike. 5. A car traveling at 30.5 m/s skids to a stop in 3.20 s. Determine the skidding distance of the acceleration. car assuming uniform 6. A bus travels 504.0 m between two stops. It starts from rest and accelerates at 1.50m/s² until it reaches a velocity of 9.00 m/s. The bus continues at this velocity and then slows down at 2.00m/s? until it comes to halt. Find the total time required for the journey.
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