Velocity,average velicity,distance

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Homework Help Overview

The discussion revolves around a problem involving an automobile's motion, specifically focusing on concepts of velocity, average velocity, and distance during acceleration. The subject area includes kinematics and uniformly accelerated motion.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the need for equations related to uniformly accelerated motion and express uncertainty about which formulas to apply. There are questions about the given quantities and the unknowns to be solved.

Discussion Status

The discussion is ongoing, with participants exploring different aspects of the problem. Some guidance has been offered regarding the importance of identifying known quantities and the appropriate equations to use, but no consensus has been reached on a specific approach.

Contextual Notes

Participants note the importance of unit consistency in the problem and express confusion regarding the selection of formulas from their resources.

john stewart
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An automobile is traveling uniformly at 55km/h. It then accelerates at 5.4m/s squared to 75km/h.

a. How long does it take to reach this new speed?
b. What is the average velocity as it speeds up?
c. How far does it travel while accelerating?
 
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Do you know the equations that relate to uniformly accelerated motion? (Suvat equations)
You will need to take great care with units in this question.
 
my book has many formulas for constant acceleration I don't know whick one to use
 
john stewart said:
my book has many formulas for constant acceleration I don't know whick one to use


Well, think about it for a while. What quantities have you been given already? What is the unknown you're being asked to solve for? What equation will allow you to solve for that unknown quantity using those given quantities?
 

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