How to Calculate Object Travel Time: Formula for 402m Distance

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Discussion Overview

The discussion revolves around calculating the time it takes for an object to travel a distance of 402 meters, starting from rest and with an acceleration of 17 m/s. Participants explore the appropriate formulas and methods for solving this problem, which appears to be related to a physics homework question.

Discussion Character

  • Homework-related, Mathematical reasoning, Technical explanation

Main Points Raised

  • One participant suggests using the formula ##s=ut+\frac{1}{2}at^2## to find time, where variables are defined as distance, initial velocity, time, and acceleration.
  • Another participant points out that 17 m/s is a velocity, not an acceleration, which may affect the calculations.
  • A later reply indicates that since the initial velocity (u) is zero, time can be derived using a square root method.
  • There is a request for clarification on whether the question pertains to schoolwork or a practical scenario, emphasizing the need for proper context in homework-related inquiries.

Areas of Agreement / Disagreement

Participants express differing views on the nature of the 17 m/s value, with some asserting it is an acceleration while others clarify it is a velocity. The discussion remains unresolved regarding the correct interpretation and application of the formulas.

Contextual Notes

There is ambiguity regarding the definitions of the variables involved, particularly the distinction between acceleration and velocity, which could impact the calculations. Additionally, the context of the question (homework vs. practical application) is not fully established.

JPaulPhysics
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What formula can I use the time it takes an object to travel 402m if it starts at rest and accelerates at 17m/s?
 
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##s=ut+\frac{1}{2}at^2##, where

s = distance travelled
u = initial velocity
t = time
a = acceleration

Use the formula for the solution to a quadratic equation to write t as a function of the other, known, variables.
 
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Thank you
 
JPaulPhysics said:
What formula can I use the time it takes an object to travel 402m if it starts at rest and accelerates at 17m/s?

JPaulPhysics said:
Thank you

Welcome to the PF.

What is the context of your question? Is it for schoolwork, or a practical question from some situation? Schoolwork questions need to be posted in the Homework Help section of the PF, and there are rules for posting schoolwork questions there. We're here to help; we just need to treat schoolwork questions in a special way that helps student learn how to learn. :smile:
 
17m/s is not an acceleration, it is a velocity.
 
Since u=0, you get t by a square root.
 

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