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Answer :
The speed of the person on the equator due to daily rotation of the earth is;
Speed = 1047.221 miles per hour
- We are told that the radius of the earth is; R = 4000 miles.
Formula for circumference is;
C = 2πR
Thus;
C = 2 × π × 4000miles
C = 25,132.74 miles
C ≈ 25133 miles
- Now, the time it takes for the earth to complete one full rotation about it's axis is 24 hours.
We know that formula for speed is;
speed = distance/time
Thus;
Speed on the equator is;
speed = 25133/24 = 1047.221 mph
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Answer: speed at the equator =
1047.33 miles per hour
Step-by-step explanation:
The radius of earth is 4000miles
The earth rotates on its axis, hence we calculate the circumference at the equator
Circumference, C = 2 π R
C = 2 x 3.142 x 4000miles
C = 25,136 miles
Since the total time of one complete rotation about it's axis is 24hours
Hence, the speed at the equator is
speed = 25,136/24 = 1047.33 miles per hour
