Which law best describes why the planets are pulled toward the sun and orbit it? newton's law of universal gravitation kepler's law of ellipses newton's 2nd law of motion newton's 3rd law of motion

Newton's law of universal gravitation

Explanation:

As we know that all planets revolve around the sun in such a way that sun will provide essential centripetal force to all the planets

this force is given by Newton's universal law of gravitation

Kepler's law of ellipse : it says that all planets revolve around the sun in elliptical path such that the sun lies at one of its focii.

Newton's 2nd law : As per Neton's 2nd law we know that net force on an object is product of mass and its acceleration.

Newton's 3rd law : Every action has equal and opposite reaction.

So here correct answer would be

Newton's law of universal gravitation

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.