Need help with velocity problems PLease

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Homework Help Overview

The discussion revolves around a physics problem related to velocity, work, and kinetic energy. The original poster presents a scenario involving a 2.59 kg object subjected to a force of 38 N over a distance of 56.9 cm, seeking to determine the object's velocity.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationship between work and kinetic energy, with one suggesting that the work done on the object should equal its kinetic energy. Questions arise regarding the calculation of kinetic energy based on the provided values.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some guidance has been offered regarding the definition of work and its implications for kinetic energy, but no consensus has been reached on the calculations or assumptions involved.

Contextual Notes

There is some ambiguity in the problem statement, particularly concerning the assumptions about energy transfer and whether potential energy considerations apply.

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Need help with velocity problems! PLease

Homework Statement


Work is also measured in Joules. If a 2.59 kg object moves a distance of 56.9 cm as a result of 38N of foce. How fast is the object moving.


Homework Equations


?


The Attempt at a Solution


I started by trying to find the velocity using the square root of 2K(kinetic Energy) divided by the mass.
 
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what did you get for KE in terms of the values provided?
 


denverdoc said:
what did you get for KE in terms of the values provided?
idk i need help with this stuff in general
 


The question is a bit fuzzy IMO, but it starts with a statement about work.

Work is defined as force x distance.

If we can assume that all of that work went into propelling the object and none into say potential energy like moving it up a ramp:

the kinetic energy of the mass should be equal to that same quantity.
 

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