Answered: a) What is the total distance…

a) What is the total distance travelled? b) What is the car's total displacement? c) What is the car's average speed of 16 seconds?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter2: Representing Motion

Section: Chapter Questions

Problem 67A

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Concept explainers

Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.

Question

a) What is the total distance travelled?

b) What is the car's total displacement?

c) What is the car's average speed of 16 seconds?

My Answers

I am not sure how to solve part a), is there a formula for this? For part b) I don't understand how the direction is [N] when the graph is labeled as [S]. For part c) I don't know where the direction came from or how to find that. Thank you.

a) 50.0m

b) Δd⃗=d⃗2-d⃗1

=40m[S] - 30m[S]

=10m[N]

c) v_av=Δd/Δt

= 50m/16s

= 3.1m/s

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