A stone is dropped from a window 5m high what is its speed

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Homework Help Overview

The problem involves a stone being dropped from a height of 5 meters and seeks to determine its speed upon impact with the ground. The subject area relates to gravitational potential energy and kinetic energy within the context of classical mechanics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the types of energy involved, specifically gravitational potential energy and kinetic energy. There is an exploration of relevant formulas and the relationship between mass, weight, and energy conversion.

Discussion Status

The discussion is active, with participants providing insights into energy conservation and the relationships between different forms of energy. Some guidance has been offered regarding the formulas for gravitational potential energy and kinetic energy, along with a suggestion to equate them to find relationships between variables.

Contextual Notes

There is a noted absence of mass in the problem setup, which participants acknowledge as a constraint in their calculations and reasoning.

indy92
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Ok this might be a simple problem but i have no idea how to do it;

A stone is dropped from a window 5m high what is its speed when it hits the ground.

I don't need answer i just need a formula or some guidence
Thanks
 
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What does the stone have at 5m high?(what kind of energy) when dropped...this kind of energy is converted into energy a body possesses by virtue of its motion...

Law of conservation of energy
 
at 5m it has gravitaitional potential energy and when its is dropped it is converted to kinetic energy
ive got the formula for GPE it is height x weight
and for kinetic energy its 1/2 x mass x speed^2

these might not be the right formulas as i don't have the mass
 
But...weight= mass x accel. due to gravity...so if you equate the two you will get:
1/2 x mass x speed^2= Height x weight

1/2 x mass x speed^2=Height x mass x accel. due to gravity


do you see anything canceling out?
 
amny thanks
i appreciate your help
 

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