How is gravity "best" described? options:

a description of mass

a molecular pull

a kind of acceleration

a fundamental force

a fundamental force

Explanation:

Gravity is the only fundamental force that physicists can currently describe without using force-carrying particles.

Gravity is best described as a fundamental force.

Explanation:

Gravity is one of the 4 fundamental forces(3 of the forces out of 6).  

The description of mass is independent to Gravity. Since an objects mass determines the strength of the pull of Gravity. But it is not Gravity itself.

Molecular pull is more of a density determination. For example the pull between the atomic particles of a solid is stronger than those of a gas.

Thrust is a kind of acceleration. It is the push and resist to the drag force.

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note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.