**7. A car climbs a 10° hill at point A at 50 mi/hr, goes over the crest, and descends the 15⁰ downward slope at point B at 75 mi/hr. If the time between the car being at point B and at point A is 4 minutes, find the average acceleration of the car (magnitude in mi/hr/min and direction in degrees) over the 4-minute interval. [Hint: Be careful to note that the direction we want is not the direction of the car, but the direction of the average acceleration vector.] A 10° 15⁰ B

**7. A car climbs a 10° hill at point A at 50 mi/hr, goes over the crest, and descends the 15⁰ downward slope at point B at 75 mi/hr. If the time between the car being at point B and at point A is 4 minutes, find the average acceleration of the car (magnitude in mi/hr/min and direction in degrees) over the 4-minute interval. [Hint: Be careful to note that the direction we want is not the direction of the car, but the direction of the average acceleration vector.] A 10° 15⁰ B

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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Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

**7. A car climbs a 10° hill at point A at 50 mi/hr, goes over the crest, and descends the 15⁰
downward slope at point B at 75 mi/hr. If the time between the car being at point B and at
point A is 4 minutes, find the average acceleration of the car (magnitude in mi/hr/min and
direction in degrees) over the 4-minute interval. [Hint: Be careful to note that the direction
we want is not the direction of the car, but the direction of the average acceleration vector.]
A
10⁰
15⁰
B

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