A person takes a trip, driving with a constant speed of 99.5 km/h, except for a 26.0-min rest stop. The person's average speed i
s 73.6 km/h. a) How much time is spent on the trip? (in h) b) How far does the person travel? (in km)
1 answer:
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Answer:
a. The station is rotating at
b. the rotation needed is
Explanation:
We know that the centripetal acceleration is
where is the rotational speed and r is the radius. As the centripetal acceleration is feel like an centrifugal acceleration in the rotating frame of reference (be careful, as the rotating frame of reference is <u>NOT INERTIAL,</u> the centrifugal force is a fictitious force, the real force is the centripetal).
The rotational speed is :
Knowing that there are in a revolution and 60 seconds in a minute.
The rotational speed needed is :
Knowing that there are in a revolution and 60 seconds in a minute.