Explanation:
a) The height of the ball h with respect to the reference line is
so its initial gravitational potential energy 
is
b) To find the speed of the ball at the reference point, let's use the conservation law of energy:
We know that the initial kinetic energy 
as well as its final gravitational potential energy 
are zero so we can write the conservation law as
Note that the mass gets cancelled out and then we solve for the velocity v as
SBb type spiral. Its a type B because its not too tightly wound but its still too tight to be a type C
<span>To relate or measure the by the quantity of something, not against the quantity</span>
Answer:
An object may become extinct due to the lack of quantity of the object and the object no longer exists so it is now extinct.
Venus has a dense atmosphere of mostly carbon dioxide. <em>(D)</em>
A, B, and C are false statements.
