knussoshd3603
08.10.2019 •
Physics
This diagram shows about question 3 in this diagram, the forces on the runner and on the ground are equal. why does the runner move forwards, yet the ground apparently does not move backwards?
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Ответ:
If everything is motionless at every instant, and time is entirely composed of instants, then motion is impossible, so it must be an illusion.
if you really want things to get confusing you can read up on zeno's dichotomy paradox stating that there is infinate amount of times you can divide something such as a distance traveled over time and you will stil
Ответ:
59.71 Hz
Explanation:
Frequency: 650 Hz
Velocity: 35 m/s
Speed of sound: 346
f = f(v / v + speed of sound)
f = 650(35 / 35 + 346)
Evaluate and you would perceive a frequency of 59.71 Hz