Hey!
Hope this helps...
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Okay... so we know that the train is moving north, which means the Apposing wind (and Friction) would be coming from the south.
We also know that the wind is coming from the West.
And based upon this information, we know that the Smoke has to be going South West because when an Apposing wind is pushed by a natural wind, the object being affected by both winds moves in both directions (a.k.a. diagonal)...
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If you need to explain anything, please ask, I also recommend looking at the photo I made below...
Answer:
The percent decrease is approximately
(Don't know what you are expected to round to.)
Step-by-step explanation:
Percent change can be calculated by doing:
Then you multiply the result to covert it to a percentage.
Let's use this formula:
approximately
Now the answer as a percent is approximately.
The percent decrease is approximately
Answer:
2.meters
Step-by-step explanation:
Lenght of ladder = 4 m
θ = 30°
To obtain h;
Using Pythagoras rule :
Sinθ = opposite / hypotenus
Hypotenus = 4 ; opposite = h
Sin 30 = h / 4
0.5 = h / 4
h = 0.5 * 4
h = 2 m
Hence, distance between th efoot of ladder and the base of the wall is 2 m
