Kinetic energy when a object is dropped from certain distance

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Homework Help Overview

The discussion revolves around calculating the kinetic energy and velocity of an object, specifically a 0.06 kg egg, when dropped from a height of 0.5 meters. The subject area includes concepts of kinetic energy, gravitational potential energy, and basic kinematics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the relationship between gravitational potential energy and kinetic energy, questioning how to apply the formulas correctly. There is a discussion on the acceleration due to gravity and its role in the calculations.

Discussion Status

Some participants have offered hints regarding the relationship between gravitational potential energy and kinetic energy, while others are attempting to clarify their understanding of the formulas involved. There is an ongoing exploration of the correct approach to solving the problem, with no explicit consensus reached yet.

Contextual Notes

Participants are working within the constraints of a homework problem, which may limit the information they can use or the methods they can apply. There is a mention of units being a point of confusion in the calculations.

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Drop a 0.06kg egg from 0.5m above the frying pan.

what is its kinetic energy when it hits the frying pan?

what is its velocity the instant before it hits the pan?
 
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Hints:
Considering energy: How much work does gravity do on the object as it falls?
Considering kinematics: What's the acceleration of any freely falling body?
 
I get the hint, 9.8 m/s2. But, how do I solve? Do i go:
0.06x0.5 = .5(0.06) x Vsquared because GPE = KE, and then just cancel?
 
Almost. GPE = KE --> [itex]mgh = 1/2mv^2[/itex]. (If you included units in your work, you'd realize that something was missing.)
 

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