How do you solve for time if a, v, and s are given

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Homework Help Overview

The original poster attempts to determine the time it takes for a load to travel a given distance, with known values for velocity and acceleration. The problem involves kinematics and the relationships between distance, velocity, acceleration, and time.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the use of kinematic equations, particularly questioning the ability to isolate time from the distance equation. There is mention of the quadratic formula and its relevance to solving for time.

Discussion Status

Some participants are exploring the implications of constant acceleration on the applicability of the equations mentioned. There is a focus on clarifying the original poster's understanding of the formulas and their components, but no consensus has been reached.

Contextual Notes

Participants question whether the problem statement implies constant acceleration, which affects the validity of the equations being considered. The original poster has not made significant progress in solving the problem due to uncertainty about the correct approach.

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Homework Statement


I need to find the time it takes a load to reach the end of a distance. Velocity and acceleration are also given.

Homework Equations


I was thinking of using t=vf-vi/(a) but this does not incorporate distance which I already have.
I would use the above formula to calculate distance (s=vi(t)+0.5(a)(t)^2) but I would need time to solve it and that is what I am solving for.

The Attempt at a Solution


No real attempt as I am not sure if I am using the correct formula.[/B]
 
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Newonsite said:
I would use the above formula to calculate distance (s=vi(t)+0.5(a)(t)^2) but I would need time to solve it and that is what I am solving for.
Why can't you solve this equation for t?
 
Newonsite said:
I would use the above formula to calculate distance (s=vi(t)+0.5(a)(t)^2) but I would need time to solve it and that is what I am solving for.
Are you familiar with the quadratic formula from 1st year Algebra?
 
Does the statement of the problem say or imply that the acceleration is constant? If it isn't, you cannot use the relevant equation that you quoted.
 

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