Respuesta :
James is (B) 20 meters far from the finish line 9 seconds after the race has started.
What is the distance?
- Distance is a numerical measurement of the distance between two objects or places.
- The distance can refer to a physical length or an estimate based on other criteria in physics or common usage.
- The distance between two points A and B is commonly expressed as |AB|.
To find the distance:
- James covers 8 meters in the opening second of the 100-meter race.
- Then he sprints at a 9-meter-per-second pace.
- We need to figure out how far James is from the finish line 9 seconds after the race begins.
- James travels 8 meters in the first second.
- After running 8 meters, the time remaining in 9 seconds is 9 - 1 = 8 seconds.
- James completes the distance = speed time = 9 8 = 72 meters in another 8 seconds.
- The total distance traveled in 9 seconds is equal to 8 + 72 = 80 meters.
- After 9 seconds, the distance remaining in a 100-meter race is 100 - 80 = 20 meters.
- 9 seconds into the race, James is 20 meters from the finish line.
Therefore, James is (B) 20 meters far from the finish line 9 seconds after the race has started.
Know more about distance here:
https://brainly.com/question/2854969
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The complete question is given below:
James covers a distance of 8 meters in the first second of a 100-meter race. Then, he sprints at a speed of 9 meters per second. How far is James from the finish line 9 seconds after the race has started?
a. 11
b. 20
c. 28
d. 80
