Galileo's analysis of projectile motion (1 Viewer)

[countrydude]

Gday well today i have been summarising space, but now i have a question.

Well it is for the dotpoint:

describe galileos analysis of projectile motion

in excel, the book talks about frames of refrance and his exprement with droping stones from masts of sailing ships blah blah.......

But in the NSW HSC online notes it talks about how the acceleration due to gravity was the same for all objetcs (ignoring air restance)

Im not gona ask my teacher he is a dumass, so can any1 help??

 

[Huy]

it's the former,

that's all you have to say about his analysis,

* parabolic shape of the trajectory
* led him to consider reference frames

using the crows nest/dropping objects,
he showed that the object would fall straight down, relative to the mask. (as horiz/vert. motions were independent of one another)

which leads onto inertial/non-inertial frames of reference
(i.e. a frame moving with constant velocity or is stationary (rest) vs one that is accelerating)

 

[tooheyz]

yeah its the sail and the masks. i dont know what gravity has to do with galileo.

its the reference frames, the stone, the boat and the building thing.

 

[kini mini]

Originally posted by Bon
Am I on the wrong dotpoint here?

You're on the right one - it cam eup in my triallast year, where it was a 4 mark question. I'm still pissed off I only got 3 .

I agree with what Bon posted earlier, and I would just add that you can resolve the horizontal and vertical vectors back together to get the velocity vector at any instant. This might seem obvious to everyone as that's where we got the vectors from in the first place, but it's how I lost my mark.