Help!!! This is worth 30 points pls pls pls help help help A tennis player bounces a tennis ball downwards with her racket. determine how fast the tennis ball is moving after it has moved 0.5 m downwards, assuming it was initially moving downwards at 4 m/s and accelerates downwards at 10m/s^2

Apply third equation of kinematics

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.

truck y has a greater velocity than truck x.