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vodka [1.7K]
3 years ago
14

Bob has been Springfield's top meteorologist for ten years. He received data from satellite imaging and computer models that a h

uge storm system is headed Springfield's way. In his weather forecast, however, he just tells viewers to expect heavy winds and light precipitation. What do you think about Bob's forecast?
A).Bob will be wrong because he's ignoring reliable computer and satellite data.
B).Bob is using his personal knowledge of the local area to make his forecast.
C).Bob is hoping that the wind direction will change.
Physics
2 answers:
djyliett [7]3 years ago
7 0
The correct letter of the answer would be letter b, Bob is using his personal knowledge of the local area to make his forecast. It does not look like he's ignoring the computer for he's been the top meteorologist for ten years, meaning to say, he would use his knowledge about the local area and tell them his knowledge about the weather.
Irina18 [472]3 years ago
4 0
The answer is B... AOA?
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Answer:

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First of all we need to decompose velocity in its rectangular components, so

v_{xi}=8.7m/s(cos 22.3\°)=8.05m/s= constant\\v_{yi}=8.7m/s(sin 22.3\°)=3.3m/s

1) We use, v_{fy}=v_{iy}-gt, as we clear it for t and using the fact that v_{fy}=0 at max height, we obtain t=\frac{v_{iy}}{g} =\frac{3.3m/s}{9,8m/s^{2}} =0.337s

2) We can use the formula y_{max}=y_{i}+v_{iy}t-\frac{gt^{2}}{2} for t=0.337s, so

y_{max}=1.08m+(3.3m/s)(0.337s)-\frac{(9.8m/s^{2})(0.337)^{2}}{2}=1.64m

3) We can use the formula y_{f}=y_{i}+v_{iy}t-\frac{gt^{2}}{2}, to find total time of fligth, so 0.42=1.08+3.3t-\frac{(9.8)t^{2}}{2}\\0=-4.9t^{2}+3.3t+0.66, as it is a second-grade polynomial, we find that its positive root is t=0.834s

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x=6.71m+0.77m=7.48m, aprox x=7.49m

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