Explain the origin of Earth's motion based on the origin on the galaxy and its solar system
1 answer:
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Answer:
t=18s
Explanation:
The final position of an object moving at constant speed is given by the formula , where
is its initial position, v its speed and t the time elapsed.
For the cheetah we have , and for the gazelle
. We want to know at which t their positions are equal, that is,
, which means,
Where we can do:
We then substitute the values we have (the initial position of the cheetah is 0m), writing the meters in km so distance units cancel out correctly:
On the last step we just multiply by 3600 because is the number of seconds in an hour.