NONE of the choices is a correct answer.
Density is (mass) DIVIDED BY (volume).
The volume of the black cube is
2 x 2 x 2 = 8 cm^3
It's density is 48/8 = 6 gm/cm^3
The volume of the yellow cube is
3 x 3 x 3 = 27 cm^3
Its density is 135/27 = 5 gm/cm^3
The black one is denser because the RATIO of its mass to its volume is greater.
The cubes are made of different substances.
The density only depends on the substance. It doesn't matter HOW MUCH of the substance there is. It's the RATIO that counts.
The black one would be denser even if one cube or the other was the size of a supertanker.
The launch velocity is at 41.1° relative to the horizontal.
Let V = the launch velocity, ft/s
The horizontal component of the velocity is
Vx =Vcos(41.1°) = 0.7536V ft/s
The vertical component of the launch velocity is
Vy = Vsin(41.1) = 0.6574V ft/s
Assume that g = 32 ft/s² and neglect air resistance.
At the maximum height of 11.7 ft, the vertical velocity is zero. Therefore
Vy² - 2*32*11.7 = 0
Vy² = 748.8
Vy = 27.3642 ft/s
Therefore
0.6574V = 27.3642
V = 41.8285 ft/s
Note that
1 ft/s = 0.3048 m/s
Therefore
V = 41.8285*0.3048 = 12.749 m/s
Answer: 12.75 m/s
It would be Atoms, they’re all made up of these tiny particles
