What is the speed of the paint can just before it hits the ground?

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Homework Help Overview

The problem involves a paint can falling from a height of 14.3 meters, with a time of 3.24 seconds recorded for its descent. The scenario includes a painter on scaffolding and a second painter positioned above the falling can, raising questions about the can's speed just before impact and whether the second painter can catch it.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss using equations that relate initial and final velocity with distance. There is a focus on determining the initial velocity, which is not provided, leading to uncertainty about the next steps.

Discussion Status

Participants are actively engaging with the problem, with some offering guidance on relevant equations. However, there is a lack of consensus on how to proceed due to the missing initial velocity, indicating a productive exploration of the problem's parameters.

Contextual Notes

There is an acknowledgment of the absence of initial velocity information, which is critical for solving the problem. Additionally, the discussion includes the assumption of ignoring air resistance.

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[SOLVED] free falling can

Homework Statement


A painter is standing on scaffolding that is raised at constant speed. As he travels upward he accidentally nudges a paint can off the scaffolding and it calls a distance of 14.3m to the ground. You are watching, and measure with your stopwatch that it takes a time of 3.24s for the can to reach the ground. Ignore air resistance
a. What is the speed of the can just before it hits the ground?
b. another painter is 3.8m above the point the pain can fell. If the paint can passes in front of him he will be able to catch it. Does he catch it?


Homework Equations


x=v0*t+.5*a*t^2
prob other kenmatics equations


The Attempt at a Solution


the answer for final V is NOT 16.8 or -16.8
 
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1. There is an eqn connecting initial and final velo and dist. Use that.
2. You can find max height from initial velo. See whether the 2nd painter is below or above the height.
 
Shooting star said:
1. There is an eqn connecting initial and final velo and dist. Use that.
2. You can find max height from initial velo. See whether the 2nd painter is below or above the height.

yeah i know but the problem is the initial v is not given
so i don't know where to go from there
 
But you have already written down the eqn for finding V0!
 
Shooting star said:
But you have already written down the eqn for finding V0!

ok wow i am not thinking...i feel rather retarded now
thanks bunches!
 

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