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Sagot :
One second later, the distance between the two stones will change in a speed of 6.86 m/s
What is distance ?
Distance can be defined as the length of change of position. When an object change from one position to another, the length between the points or position is known as distance.
If a dropped stone has a distance d = 4.9t²
Let us assumed that the time taken = 3 seconds
The distance d = 4.9 × 3² = 44.1 m
If another stone is dropped one second later, then the time t = 4 s
The distance = 4.9 × 4² = 78.4 m
One second later, the time = 5 seconds
The speed of change in distance = ( 78.4 - 44.1 )/ 5
The speed of change in distance = 34.3 / 5
The speed of change in distance = 6.86 m/s
Therefore, one second later, the distance between the two stones will change in 6.86 m/s
Learn more about Speed here: https://brainly.com/question/26046491
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