What formula would i use this for this HW problem? (Aircraft carrier jet launch)

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Homework Help Overview

The problem involves the physics of a jet fighter launched from an aircraft carrier, specifically focusing on calculating the jet's acceleration and the time taken to reach take-off speed. The context is introductory physics for non-math majors.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to convert units and apply dimensional analysis for acceleration and time calculations. Some participants question the units of acceleration and suggest verifying the kinematic equations relevant to constant acceleration.

Discussion Status

The discussion is active, with participants providing guidance on unit conversions and kinematic equations. There is no explicit consensus on the approach to take, as different perspectives on unit usage and problem interpretation are being explored.

Contextual Notes

There is a mention of potential confusion regarding the units used in the problem, as well as the appropriateness of converting to SI units. Participants are also considering the implications of using US Customary units versus SI units.

Young Bull
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New user has been reminded to use the Template when posting schoolwork problems
*This is an introductory physics class for non-math majors.

A typical jet fighter launched from an aircraft carrier reaches a take-off speed of 175mph over a distance of 310 ft.
  1. assuming the acceleration is constant, what is the jet's acceleration in (meters per second)?
2) how long does i take to launch the jet?
For number 1, i just covert mph to m/s right? (i'm aware it doesn't say m/s^2 - might be a mistake from professor) I just used dimensional analysis
310 ft= 94.88 meters. And number 2, is that simply D=RT? 94.88=78.28T? solve for t?
 
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Welcome to the PF. :smile:
Young Bull said:
what is the jet's acceleration in (meters per second)?
Acceleration has units of m/s^2, not m/s. Is that a typo, or does your question say exactly that?

Also, it's best to start with the kinematic equations for motion with constant acceleration. Can you list what they are?

Given acceleration a, v(t) = ? and x(t) = ?
 
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Why convert any thing to SI units? The problem data is all in US Customary units; keep it there. If necessary, convert the final result to SI if the problem actually states SI units for the result.
 
mph stands for miles per hour, not meters per hour.

Please list the SUVAT equations you are familiar with.
 

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