Answer:
C
Explanation:
When we look at your cars speed at an exact moment for example 55 km/h this is instantaneous because there is no other given speeds at the time.
Answer:
58.8 Hz
Explanation:
The relationship between frequency and period of a wave is
![f=\frac{1}{T}](https://tex.z-dn.net/?f=f%3D%5Cfrac%7B1%7D%7BT%7D)
where
f is the frequency
T is the period
For the wave in this problem, we know its period:
T = 0.017 s
Therefore, its frequency is
![f=\frac{1}{0.017 s}=58.8 Hz](https://tex.z-dn.net/?f=f%3D%5Cfrac%7B1%7D%7B0.017%20s%7D%3D58.8%20Hz)
The force is going which ever way the person kicks the ball.