If you sight Polaris at 20 degrees above your Northern Horizon then you know that your latitude is 20 degrees north of the equator.
Because the sound waves are being observed by the people that are there and it is not empty as in an empty place the sound waves will come back to you.
Answer:
they are the source of energy for primary consumers... they also produce oxygen and sugar
<u>We are given:</u>
the initial height of the object (h) = 100 m
initial velocity (u) = 0 m/s
we will let the value of g = 10 m/s/s
<u>Speed of the object just before hitting the ground:</u>
From the third equation of motion:
v² - u² = 2ah (where v is the final velocity)
replacing the variables, we get:
v² - (0)² = 2(10)(100)
v² = 2000
v = 10√20 = 44.7 m/s
Therefore, the speed of the object just before hitting the ground is 44.7 m/s