A penny fell off the top of the building and hit the sidewalk below 3.1 seconds later how many meters did the penny fall to the
1 answer:
To solve this we are going to use the free distance fallen formula: 
where
is the distance
is the gravity of Earth 
is the time in seconds
We know from our problem that the penny fell off the top of the building and hit the sidewalk below 3.1 seconds later, so
. Lets replace the value in our formula:
meters
We can conclude that the penny fell a distance of 47.098 meters
where
We know from our problem that the penny fell off the top of the building and hit the sidewalk below 3.1 seconds later, so
We can conclude that the penny fell a distance of 47.098 meters
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Answer:
- Q9 - B) 8
- Q10 - D) 4.5
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<h2>Question 9</h2>We have a diagram and need to find the number of routes without repeat paths:
or
We can see that there is one route from A to B, two routes from B to C and two routes from C to A. This is same on reverse order.
This gives us the number of routes:
Total number is:
The matching answer choice is B
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<h2>Question 10</h2>From the given we can observe that:
ABC and DCE are similar triangles, since they have same angle at vertex E (vertical angles are equal) and both are right triangles.
From similarity we get same ratio of corresponding sides:
We can find areas of triangles ACD and ECD and subtract to get the area of triangle AEC:
As per ratio of corresponding sides:
As per segment addition:
From the two equations above we get:
Now, the required area is:
This is matching the answer choice D