sarah121868
29.04.2021 •
Physics
A pickup car truck with mass 1800 kg and a compact car with mass 900 kg are both moving eastward. The driver of the compact car suddenly slams on the brakes, slowing the vehicle to 7.91 m/s. The pickup truck, traveling at 20.88 m/s, crashes into the compact car. Please find the speed of the two vehicles after the collision, assuming they become entangled and move as a single object.
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Ответ:
f = 1.5 Hz
Explanation:
Given that,
18 waves pass by a person in 12 seconds.
We need to find the frequency of these water waves.
We know that,
Frequency = no. of waves per second
So,
So, the frequency of these water waves is equal to 1.5 Hz.