7. A ball is traveling at a constant speed (v) of 30.0 m/s in a circle with a radius (r) of 5.0 m.
(Hint: The circumference C = 2hr)
7.1
The centripetal acceleration is ZERO
a. False
b. True
7.2
The total distance traveled by the ball is:
7.3
How long in time does it take for the ball complete one circle?
7.4
The displacement traveled by the ball is:
7.5
The average velocity of the ball is:
7.6
The average speed of the ball is:

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

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