UBER EASY QUESITON: just need to make sure

  • Thread starter pfssassin
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In summary, the conversation discusses finding the average velocity of a falling object, assuming constant acceleration and using the formula d/t. The question also addresses the assumption that the speed only rises to the average velocity and the use of the formula d = 1/2 at^2 to find acceleration. The person asking the question realizes their mistake and thanks the other person for their help.
  • #1
pfssassin
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Just a general question. If you drop a object (air resistance negligible) and you know the t initial is 0 and you know the t final is w/e you get on your stop watch. You do d/t to get average velocity of the fallen object.


Now that you have the avrg velocity you know the V initial is zero and the speed rises to the avrg velocity, can you assume that a = Vavrg/t?


Im in IB physics HL but just can't get my head around this one for some reason...
 
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  • #2
Why do you think the speed only rises to the average velocity? If you assume constant acceleration and you had a way to measure the final velocity, then you would be right. But the average velocity would be reached at 1/2 t_final and keep increasing after that...

Out of the data you have (t and d) you can find out a by using [tex]d = \frac{1}{2} a t^2[/tex]
 
  • #3
haha wow I feel like an idiot. Thanks.
 

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"UBER EASY QUESTION: just need to make sure" is a phrase that is commonly used to describe a question that is very simple and easy to answer.

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In science, it is important to have a clear understanding of basic concepts and principles before moving on to more complex ideas. Simple questions can help ensure that foundational knowledge is solid before delving into more challenging topics.

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