Answer:
1.65 h
121.39 km
Explanation:
Given that
speed of the driver, v = 99.5 km/h
time spent resting, t = 26 min
Average speed of the driver = 73.6 km/h
check attachment for calculation and how I arrived at the answer
Wait what? I can’t understand. But here is what I understood. About how long does it take the Earth to make 1 revolution around the sun? Answer: 365 days
It's the natural tendency of things to keep going unless there's something trying to stop them.
It's usually called "inertia".
Don't get the idea from all of this that things stop unless there's something to keep them going. The truth is exactly the opposite: Things keep going unless there's something to make them stop.
Answer:
Δt ≈ 2.9137 ≈ 3 seconds per kilometer
Explanation:
The speed of light is approximately 300000 km /s, while the speed fo the sound in the air is 0.3432 km/s.
The light takes therefore this time to travel one kilometer
![t = \frac{x}{v}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7Bx%7D%7Bv%7D)
![t = \frac{1}{300000}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B1%7D%7B300000%7D)
![t = 3.33 x 10^{-6} s](https://tex.z-dn.net/?f=t%20%3D%203.33%20x%2010%5E%7B-6%7D%20s)
On the other hand the sound takes this time to travel one kilometer
![t = \frac{1}{0.3432}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B1%7D%7B0.3432%7D)
t = 2.9137 s
Then the delay time is 2.9137 -
Δt ≈ 2.9137 ≈ 3 s
Answer:
D
Explanation:
they are different states of the same pure substance lmk if I'm right I'm 99% sure I am