One-Dimensional Gravitational Motion

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Homework Help Overview

The discussion revolves around a problem in one-dimensional gravitational motion, specifically calculating the height from which a small ball is released after falling for a given time. The context involves basic physics concepts such as force and motion under gravity.

Discussion Character

  • Exploratory, Assumption checking, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the implications of the ball being released from rest, questioning the initial velocity and its role in the calculations. There are attempts to apply relevant equations, but uncertainty remains regarding the correct setup and interpretation of the variables involved.

Discussion Status

The discussion is ongoing, with participants verifying the correctness of their equations and exploring the implications of the initial conditions. Some guidance has been offered regarding the initial velocity being zero, but further clarification on the overall approach is still needed.

Contextual Notes

Participants are working under the constraints of the problem statement and are navigating through the assumptions related to initial conditions and the equations of motion. There is a focus on ensuring the correct interpretation of the problem setup.

BMWPower06
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Homework Statement


It takes 2.70 s for a small ball with a mass of 0.050 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released.


Homework Equations


F=MA
Vo=h/t - .5at


The Attempt at a Solution



I plugged in all the knowns into the above equation but was still left with an unknown initial V and an unknown height. unsure how to proceed.
 
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BMWPower06 said:

Homework Statement


It takes 2.70 s for a small ball with a mass of 0.050 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released.


Homework Equations


F=MA
Vo=h/t - .5at


The Attempt at a Solution



I plugged in all the knowns into the above equation but was still left with an unknown initial V and an unknown height. unsure how to proceed.

Well, the problem says the ball was released from rest. What does this imply about the initial V?
 
CaptainZappo said:
Well, the problem says the ball was released from rest. What does this imply about the initial V?

o ok it is zero, is the rest of my equation correct?
 
Last edited:
so I've got:
0= h/2.7 +13.23
 
It looks right to me.
 

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