Three students attempt to define what it means for lines lll and mmm to be perpendicular. Can you match the teacher's comments t
o the definitions? Definition of perpendicular lines Teacher's comments
1 answer:
Incompletevquestion. However, I inferred from a general perspective about perpendicular lines.
<u>Explanation:</u>
Put simply, <u>perpendicular lines</u> are lines that are at right angles (90°) to each other. Thus, we could say based on this definition that for lines lll and mmm to be perpendicular they intersect and be at right angles (90°) to each other as <u>found on the attached image.</u>
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Answer:
force at the top will be 388 N which is nearly equal to 389
option (b) is correct
Explanation:
We have given velocity of the moving car v = 10 m/sec
Radius of the circular section r = 30 m
Mass of the passenger m = 60 kg
Acceleration due to gravity
At the top normal force is given by
So force at top will be
So force at the top will be 388 N which is nearly equal to 389
So option (b) is correct
19 m/s is the average velocity if the initial velocity of an object is 10 m/s and the final velocity is 28 m/s.
<u>Explanation:</u>
The initial and final velocity is given and the average velocity is asked, which can be calculated by the following method,
Given that initial velocity = 10 m/s and final velocity = 28 m/s
As we know that the average velocity =
Although,
But here, there is only given initial and final velocity therefore it will be simply an average of the two.
Therefore, the average velocity of the object is 19 m/s.