Check the current weather map for 2 different times, and see where the center of the storm is. That tells you what direction it's moving. With its speed and direction, you have its velocity.
The correct answer is B.
B) Fossil Fuels
You need the triangle to help work it out.
Force (pressing force) = Pressure x Area.
1. Force/ Area - 10/2 = 5N/m2
2. (Same as Q1) 70/0.2 = 350N/m2
3. (Same as Q1) 300/0.01 = 30000N/m2
4. Force/pressure - 500/20 = 25m
5. Pressure x Area - 15000 x 0.003 = 4.5N
Answer:
This explanation from Physics/Geometry
60o |
|
| Fy (the vert. comp.)
↑
← 30o |
Fx (the horizontal componenet)
F = √(Fx2 + Fy2)
Fy = 50 · cos 60o = 50 · (1/2) = 25 N
Fx = 50 · cos 30o = 50 · (√3)/2 = 25√3 N
I see, that vector sign did not appear in my comment above, so the vector equation is
→ → →
F = 50 cos 30o i + 50 cos 60o j
Explanation: