Answer:
Explanation:
Given
coefficient of kinetic friction ![\mu _k=0.002](https://tex.z-dn.net/?f=%5Cmu%20_k%3D0.002)
mass of locomotive=180,000 kg
v=10 m/s
deceleration provided by friction ![a=\mu _kg](https://tex.z-dn.net/?f=a%3D%5Cmu%20_kg)
![a=0.002\times 9.8=0.0196 m/s^2](https://tex.z-dn.net/?f=a%3D0.002%5Ctimes%209.8%3D0.0196%20m%2Fs%5E2)
Time taken to stop completely is
v=u+at
where v=final velocity
u=initial velocity
a=acceleration
![0=10-0.0196\times t](https://tex.z-dn.net/?f=0%3D10-0.0196%5Ctimes%20t)
t=510.20 s
Distance traveled during this point
![v^2-u^2=2 a s](https://tex.z-dn.net/?f=v%5E2-u%5E2%3D2%20a%20s)
![0-10^2=2(-0.0196)s](https://tex.z-dn.net/?f=0-10%5E2%3D2%28-0.0196%29s)
![s=\frac{100}{0.0392}](https://tex.z-dn.net/?f=s%3D%5Cfrac%7B100%7D%7B0.0392%7D)
s=2551.02 m
Answer:
a) 423.64 KJ / mole
Explanation:
The pictures below explains it all in the calculation and i hope it helps you
Answer: 15 mph east
Explanation: Since the bicycle went east for 30 miles, in 2 hours. You divide 30 by how many hours which is 2. So, the solution is 15.
Answer:
10.36m/s
Explanation:
From the question we are given;
Distance S = 5.40m
Initial velocity v= 1.17m/s
Required
Final velocity of the diver
Using the equation of motion
v² = u²+2gS
v²= 1.17²+2(9.8)(5.40)
v² = 1.3689+105.84
v² = 107.2089
v = √107.2089
v= 10.36m/s
Hence the required velocity is 10.36m/s
17.6 cm cubed all you have to do is dimensional analysis and multiply .88/1 by x/20