Answer:
150 feet would be first point when they both fall down.
Step-by-step explanation:
As Justin falls down every 30 feet and Mike falls down every 25 feet.
In order to find the first point when Justine and Mike both would be fallen, we need to determine the Least Common Multiple of L.C.M of 25 and 30.
In order to determine the Least Common Multiple of L.C.M of 25 and 30, first we need to list down some of the multiples of 25 and 30 until we find the lowest shared multiple of 25 and 30.
25: 25 50 75 100 125 150
30: 30 60 90 120 150
So, it is clear that the lowest shared multiple of 25 and 30 is 150. So, 150 will be our Least Common Multiple.
Therefore, 150 feet would be first point when they both fall down.
Keywords: Least Common Multiple, LCM
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The correct answer is d equals 1
Answer:
The average speed is 7.5
Step-by-step explanation:
Speed is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it.
Then, the average speed relates the change in position to the time taken to effect that change:
The change in position is the difference between the final position and the initial position, while the change in time is the difference between the final and initial time.
In this case, the starting and ending positions are calculated by replacing the times in the function of the distance d (t):
d(5)= 0.5*5²= 12.5 m
d(10)= 0.5*10²= 50 m
So:
- change in position= final position - initial position= 50 m - 12.5 m= 37.5 m
- change in time= 10 s - 5 s= 5 s
Replacing in the definition of speed:
and solving you get:
speed= 7.5
<u><em>The average speed is 7.5 </em></u><u><em></em></u>