Answer:
The correct answer is c. More total rainfall from a slower moving storm.
When the the forward speed of the hurricanes and tropical storms slows down they tend to increase the rainfall. Because of the slow movement the storm can be for few days over a given region and produce rainfall without stopping, thus create major flooding, pilling up of the coastal water, and produce persistent strong winds even though they have decreased in their forward speed.
Explanation:
During either one, the sun, moon, and Earth are lined up in the same straight line. The difference is whether the moon or the Earth is the one in the "middle".
You have to solve this by using the equations of motion:
u=3
v=0
s=2.5
a=?
v^2=u^2+2as
0=9+5s
Giving a=-1.8m/s^2
Then using the equation:
F=ma
F is the frictional force as there is no other force acting and its negative as its in the opposite direction to the direction of motion.
-F=25(-1.8)
F=45N
Then use the formula:
F=uR
Where u is the coefficient of friction, R is the normal force and F is the frictional force.
45=u(25g)
45=u(25*10)
Therefore, the coefficient of friction is 0.18
Hope that helps
Contour lines are lines that signifies the elevation on a mountain or hill
Answer:
6.75 seconds
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration = 16 m/s²
g = Acceleration due to gravity = 9.81 m/s²
Let y be the distance the rocket is accelerating
960-y is the distance traveled in free fall
![v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 16\times y+0^2}\\\Rightarrow v^2=32y\ m/s](https://tex.z-dn.net/?f=v%5E2-u%5E2%3D2as%5C%5C%5CRightarrow%20v%3D%5Csqrt%7B2as%2Bu%5E2%7D%5C%5C%5CRightarrow%20v%3D%5Csqrt%7B2%5Ctimes%2016%5Ctimes%20y%2B0%5E2%7D%5C%5C%5CRightarrow%20v%5E2%3D32y%5C%20m%2Fs)
In free fall
![v^2-u^2=2g(960-y)\\\Rightarrow 0-32y=2g(960-y)\\\Rightarrow -32y=2\times -9.81(960-y)\\\Rightarrow 960-y=\dfrac{-32}{2\times -9.81}y\\\Rightarrow 960-y=1.63098878695y\\\Rightarrow 960=2.63098878695y\\\Rightarrow y=\dfrac{960}{2.63098878695}\\\Rightarrow y=364.881828749\ m](https://tex.z-dn.net/?f=v%5E2-u%5E2%3D2g%28960-y%29%5C%5C%5CRightarrow%200-32y%3D2g%28960-y%29%5C%5C%5CRightarrow%20-32y%3D2%5Ctimes%20-9.81%28960-y%29%5C%5C%5CRightarrow%20960-y%3D%5Cdfrac%7B-32%7D%7B2%5Ctimes%20-9.81%7Dy%5C%5C%5CRightarrow%20960-y%3D1.63098878695y%5C%5C%5CRightarrow%20960%3D2.63098878695y%5C%5C%5CRightarrow%20y%3D%5Cdfrac%7B960%7D%7B2.63098878695%7D%5C%5C%5CRightarrow%20y%3D364.881828749%5C%20m)
The distance the rocket will keep accelerating is 364.881828749 m
After which it will travel 960-364.881828749 = 595.118171251 m in free fall
![s=ut+\frac{1}{2}at^2\\\Rightarrow 364.881828749=0t+\frac{1}{2}\times 16\times t^2\\\Rightarrow t=\sqrt{\frac{364.881828749\times 2}{16}}\\\Rightarrow t=6.75353452598\ s](https://tex.z-dn.net/?f=s%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2%5C%5C%5CRightarrow%20364.881828749%3D0t%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%2016%5Ctimes%20t%5E2%5C%5C%5CRightarrow%20t%3D%5Csqrt%7B%5Cfrac%7B364.881828749%5Ctimes%202%7D%7B16%7D%7D%5C%5C%5CRightarrow%20t%3D6.75353452598%5C%20s)
The time the rocket is accelerating is 6.75 seconds