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Math Help - displacement vector problem

  1. #1
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    displacement vector problem

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  2. #2
    o_O
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    Since the airplane is travelling at a constant height, then your j component stays the same.

    Now, you know that the airplane is travelling at a constant velocity. You are given that in 30 seconds, it travels 9.24 \cdot 10^3 metres. So, v = \frac{d}{t} = \frac{9.24 \cdot 10^3 \ \text{metres}}{30.0 \ \text{s}} = 308 \ ms^{-1}

    So how far will it have travelled in 70 seconds? This will be your i-component.

    Now use that position vector and find its magnitude and angle with respect to the x-axis.
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  3. #3
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    Quote Originally Posted by skeeter
    9.24 \times 10^3 meters in 30 sec is 3.08 \times 10^2 meters per second.
    can you now determine the horizontal displacement at t = 70 seconds?
    the vertical component does not change.
    finish the problem ... find the magnitude and direction of the position vector at t = 70 seconds.

    i still have it wrong
    21560 m
    it tells me Your answer is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation.
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  4. #4
    o_O
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    Show us what you have done. It should work out.
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  5. #5
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    Quote Originally Posted by o_O View Post
    Show us what you have done. It should work out.

    i got it now.

    it is the resultant, not the horizontal thing i got before.
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