It depends what is the position of earth and saturn. Distance from earth to saturn varies depending on whether earth is between sun and saturn or sun is between earth and saturn. Obviously, the shortest distance will be if earth is between sun and saturn. we will take that the distance between earth and saturn is:
s = 1 275 000 000 km
The time required to travel that distance is:
t = s/v = 45535 hours or 1897.3 days
I think the answer is D, but I’m not at all sure :l
Tensile strength is the amount of tension a material can hold, at least I hope that’s what it is.
Answer:
![v = 15.45 m/s](https://tex.z-dn.net/?f=v%20%3D%2015.45%20m%2Fs)
Explanation:
As per mechanical energy conservation we can say that here since friction is present in the barrel so we will have
Work done by friction force = Loss in mechanical energy
so we will have
![W_f = (U_i + K_i) - (U_f + K_f)](https://tex.z-dn.net/?f=W_f%20%3D%20%28U_i%20%2B%20K_i%29%20-%20%28U_f%20%2B%20K_f%29)
here we know that
![W_f = F_f . d](https://tex.z-dn.net/?f=W_f%20%3D%20F_f%20.%20d)
![W_f = 40 \times 4](https://tex.z-dn.net/?f=W_f%20%3D%2040%20%5Ctimes%204)
![W_f = 160 J](https://tex.z-dn.net/?f=W_f%20%3D%20160%20J)
Initial compression in the spring is given as
![F = kx](https://tex.z-dn.net/?f=F%20%3D%20kx)
![4400 = 1100 x](https://tex.z-dn.net/?f=4400%20%3D%201100%20x)
![x = 4 m](https://tex.z-dn.net/?f=x%20%3D%204%20m)
now from above equation
![W_f = (\frac{1}{2}kx^2 + 0) - (mgh + \frac{1}{2}mv^2)](https://tex.z-dn.net/?f=W_f%20%3D%20%28%5Cfrac%7B1%7D%7B2%7Dkx%5E2%20%2B%200%29%20-%20%28mgh%20%2B%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2%29)
![160 = (\frac{1}{2}1100(4^2) + 0) - (60 \times 9.8\times 2.50 + \frac{1}{2}(60)v^2)](https://tex.z-dn.net/?f=160%20%3D%20%28%5Cfrac%7B1%7D%7B2%7D1100%284%5E2%29%20%2B%200%29%20-%20%2860%20%5Ctimes%209.8%5Ctimes%202.50%20%2B%20%5Cfrac%7B1%7D%7B2%7D%2860%29v%5E2%29)
![160 = 8800 - 1470 - 30 v^2](https://tex.z-dn.net/?f=160%20%3D%208800%20-%201470%20-%2030%20v%5E2)
![v = 15.45 m/s](https://tex.z-dn.net/?f=v%20%3D%2015.45%20m%2Fs)