Answered: A motorist travels for 2h at 70 km/h…

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A motorist travels for 2h at 70 km/h and 1h at 100 km/h. What is her average speed for the trip? *

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section: Chapter Questions

Problem 1AYK: Do highway speed limit signs refer to average speeds or to instantaneous speeds? Explain.

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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

A motorist travels for 2h at 70 km/h and 1 h
at 100 km/h. What is her average speed for
the trip? *
88 km/h
80 km/h
92 km/h
90 km/h

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