You need to drive 69.7 km (43.3 miles) for an interview. The interview is at 11:15 am, you leave at 10:00 am and you plan to drive at 100 km/h for the first 30 km, but then it is the 91 you're driving on so of course you hit traffic and have to slow down. For the next 30 km you drive at 40 km/h. What would be the least speed you would need to drive at for the rest of the trip to arrive on time to the interview?

You need to drive 69.7 km (43.3 miles) for an interview. The interview is at 11:15 am, you leave at 10:00 am and you plan to drive at 100 km/h for the first 30 km, but then it is the 91 you're driving on so of course you hit traffic and have to slow down. For the next 30 km you drive at 40 km/h. What would be the least speed you would need to drive at for the rest of the trip to arrive on time to the interview?

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

You need to drive 69.7 km (43.3 miles) for an interview. The interview is at 11:15 am, you leave
at 10:00 am and you plan to drive at 100 km/h for the first 30 km, but then it is the 91 you're
driving on so of course you hit traffic and have to slow down. For the next 30 km you drive at 40
km/h. What would be the least speed you would need to drive at for the rest of the trip to
arrive on time to the interview?

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