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You drive on Interstate 10 from San Antonio to Houston,
Chapter , Problem 13(choose chapter or problem)
You drive on Interstate 10 from San Antonio to Houston, half the time at 55 km/h and the other half at 90 km/h. On the way back you travel half the distance at 55 km/h and the other half at 90 km/h. What is your average speed
(a) from San Antonio to Houston,
(b) from Houston back to San Antonio, and
(c) for the entire trip?
(d) What is your average velocity for the entire trip?
(e) Sketch x versus t for (a), assuming the motion is all in the positive x direction. Indicate how the average velocity can be found on the sketch.
Questions & Answers
QUESTION:
You drive on Interstate 10 from San Antonio to Houston, half the time at 55 km/h and the other half at 90 km/h. On the way back you travel half the distance at 55 km/h and the other half at 90 km/h. What is your average speed
(a) from San Antonio to Houston,
(b) from Houston back to San Antonio, and
(c) for the entire trip?
(d) What is your average velocity for the entire trip?
(e) Sketch x versus t for (a), assuming the motion is all in the positive x direction. Indicate how the average velocity can be found on the sketch.
ANSWER:Q:You drive on Interstate 10 from San Antonio to Houston, half the time at 55 km/hand the other half at 90 km/h. On the way back you travel half the distance at 55 km/hand the other half at 90 km/h. What is your average speed (a) from San Antonio toHouston, (b) from Houston back to San Antonio, and (c) for the entire trip (d) What isyour average velocity for the entire trip (e) Sketch x versus t for (a), assuming themotion is all in the positive x direction.Indicate how the average velocity can befound on the sketch. SolutionStep 1 azWe need to find the average speed for the drive from San Antonio to Houston and fromHouston to San Antonio. We are also asked to find the average speed and velocity for theentire trip and the graph of the motion.