Between 1992 and today, astronomers using large telescopes have discovered many icy pieces that orbit in the same region as the
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You told your insane friend that it will take the book 5.6 s to get to the ground.
From the question given above, the following data were obtained:
Height (H) = 155 m
<h3>Time (t) =? </h3><u>NOTE</u>: Acceleration due to gravity (g) = 10 m/s²
The time taken for the book to get to ground can be obtained as follow:
<h3>H = ½gt²</h3>155 = ½ × 10 × t²
155 = 5 × t²
<h3>Divide both side by 5</h3>t² = 31
<h3>Take the square root of both side </h3>Thus, the time taken for the book to get to the ground is 5.6 s
Hence, you told your insane friend that it will take the book 5.6 s to get to the ground.
Learn more: brainly.com/question/24903556
16.42 seconds will elapse between passing B on the way up and coming back to B on the way down.
<h3>What is the definition of Angular Speed? </h3>The rate of change of angular displacement is defined as angular speed, and it is stated as follows:
ω = θ t
Where,
θ is the angle of rotation,
t is the time
ω is the angular velocity
Given data;
sin a = 2/5
a=sin(2/5)
a=23°
The linear velocity is the product of the angular velocity and the length.
The times between the two points are found as;
Hence, the time between passing B on the way up and returning to B on the way down will be 16.42 sec.
To learn more about the angular speed refer to the link;
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