Physics
posted by John on .
Sorry, I asked this question earlier but I didn't clarify it well:
A plane drops a hamper of medical supplies from a height of 5210 m during a practice run over the ocean. The plane’s horizontal velocity was 133 m/s at the instant the hamper was dropped.
The acceleration of gravity is 9.8 m/s^2.
I was told this was one dimensional however the Height (y) is equal to 5210 and the horizontal (xaxis) velocity is 133 m/s so it certainly seems to have to be 2d; also the chapter we're in is all 2 and 3 dimensional.
What is the magnitude of the overall velocity of the hamper at the instant it strikes the surface of the ocean?
I have a formula for this:
v=[v^2(subx)+v^2(suby)]^1/2
And I believe that:
v(subx)=v(naughtx)=v(naught)[cos (&)]
v(suby)=v(naughty)gt;
v(naughty)=v(naught)[sin (&)]
where '&' is the angle at which the object is dropped(theta if you will). the problem is I can't get the right answer; I think maybe I'm not using the correct angle, but the problem seems to imply that the angle is 270 degrees (or 90 degrees if you prefer) since it's a straight drop downward. I don't know if the plane's velocity affects the angle '&', but I didn't think it would.
The answer is given as: 346.129m

answered it myself, thanks anyway.