Answer:
Image result for If the world was not tilted, what would happen to the people living on Earth
If the Earth weren't tilted on its axis, there would be no seasons. And humanity would suffer. When a Mars-size object collided with Earth 4.5 billion years ago, it knocked off a chunk that would become the moon. It also tilted Earth sideways a bit, so that our planet now orbits the sun on a slant
Explanation: i looked up the answer
Answer:
![\theta = 86.491^{\textdegree}](https://tex.z-dn.net/?f=%5Ctheta%20%3D%2086.491%5E%7B%5Ctextdegree%7D)
Explanation:
The equations for the horizontal and vertical position of the ball are, respectivelly:
![4.570\,m = [(7.157\,\frac{m}{s})\cdot\cos \theta]\cdot t\\3.050\,m = 2.440\,m +[(7.157\,\frac{m}{s})\cdot \sin \theta]\cdot t - \frac{1}{2}\cdot (9.807\,\frac{m}{s^{2}} )\cdot t^{2}](https://tex.z-dn.net/?f=4.570%5C%2Cm%20%3D%20%5B%287.157%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%29%5Ccdot%5Ccos%20%5Ctheta%5D%5Ccdot%20t%5C%5C3.050%5C%2Cm%20%3D%202.440%5C%2Cm%20%2B%5B%287.157%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%29%5Ccdot%20%5Csin%20%5Ctheta%5D%5Ccdot%20t%20-%20%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20%20%289.807%5C%2C%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%20%29%5Ccdot%20t%5E%7B2%7D)
By isolating each trigonometric component and summing each equation:
![20.885\,m^{2} = [51.223\,\frac{m^{2}}{s^{2}}\cdot \cos^{2} \theta]\cdot t^{2}](https://tex.z-dn.net/?f=20.885%5C%2Cm%5E%7B2%7D%20%3D%20%5B51.223%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B2%7D%7D%5Ccdot%20%5Ccos%5E%7B2%7D%20%5Ctheta%5D%5Ccdot%20t%5E%7B2%7D)
![[0.61\,m + \frac{1}{2}\cdot (9.807\,\frac{m}{s^{2}} )\cdot t^{2}]^{2} = [51.223\,\frac{m^{2}}{s^{2}}\cdot \sin^{2} \theta]\cdot t^{2}](https://tex.z-dn.net/?f=%5B0.61%5C%2Cm%20%2B%20%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20%289.807%5C%2C%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%20%29%5Ccdot%20t%5E%7B2%7D%5D%5E%7B2%7D%20%3D%20%5B51.223%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B2%7D%7D%5Ccdot%20%5Csin%5E%7B2%7D%20%5Ctheta%5D%5Ccdot%20t%5E%7B2%7D)
![21.257\,m^{2} + (5.982\,\frac{m^{2}}{s^{2}})\cdot t^{2}+(24.044\,\frac{m^{2}}{s^{4}} )\cdot t^{4} = (2623.796\,\frac{m^{2}}{s^{2}})\cdot t^{2}](https://tex.z-dn.net/?f=21.257%5C%2Cm%5E%7B2%7D%20%2B%20%285.982%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B2%7D%7D%29%5Ccdot%20t%5E%7B2%7D%2B%2824.044%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B4%7D%7D%20%29%5Ccdot%20t%5E%7B4%7D%20%3D%20%282623.796%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B2%7D%7D%29%5Ccdot%20t%5E%7B2%7D)
![21.257\,m^{2} - (2617.814\,\frac{m^{2}}{s^{2}})\cdot t^{2}+(24.044\,\frac{m^{2}}{s^{4}} )\cdot t^{4} = 0](https://tex.z-dn.net/?f=21.257%5C%2Cm%5E%7B2%7D%20-%20%282617.814%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B2%7D%7D%29%5Ccdot%20t%5E%7B2%7D%2B%2824.044%5C%2C%5Cfrac%7Bm%5E%7B2%7D%7D%7Bs%5E%7B4%7D%7D%20%29%5Ccdot%20t%5E%7B4%7D%20%3D%200)
The positive real roots are:
![t_{1} = 10.434\,s,t_{2} = 0.09\,s](https://tex.z-dn.net/?f=t_%7B1%7D%20%3D%2010.434%5C%2Cs%2Ct_%7B2%7D%20%3D%200.09%5C%2Cs)
The needed angle is:
![\theta = \cos^{-1} [\frac{4.570\,m}{(7.157\,\frac{m}{s} )\cdot t} ]\\\theta_{1} = 86.491^{\textdegree}\\\theta_{2} = NaN](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20%5Ccos%5E%7B-1%7D%20%5B%5Cfrac%7B4.570%5C%2Cm%7D%7B%287.157%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%20%29%5Ccdot%20t%7D%20%5D%5C%5C%5Ctheta_%7B1%7D%20%3D%2086.491%5E%7B%5Ctextdegree%7D%5C%5C%5Ctheta_%7B2%7D%20%3D%20NaN)
Answer:
These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are mostly the same, both structurally and chemically; and finally, that energy flow occurs within.
Explanation:
hope this helped! <3
can i have the crown ?
You have a distance and a time so you can work out the bikes speed which would be distance/time so 40mph.