Q&A

How does motion relate to gravity?

How does motion relate to gravity?

Newton’s second law of motion states that the acceleration a of the object is related to the unbalanced force F acting on it by the equation: The acceleration due to gravity experienced by any object that is falling freely close to the Earth’s surface is a constant.

What does physics say about gravity?

On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth’s surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second.

Is gravity a force of motion?

Gravity or gravitational forces are forces of attraction. That pull is gravity at work. Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass. The size of the pull depends on the masses of the objects.

What is the motion due to gravity called?

Free fall is the motion of a body where its weight is the only force acting on an object. The acceleration of free-falling objects is referred to as the acceleration due to gravity g .

What are the two factors that affect gravity?

When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.

How fast is gravity?

The best results, at the present time, tell us that the speed of gravity is between 2.993 × 10^8 and 3.003 × 10^8 meters per second, which is an amazing confirmation of General Relativity and a terrible difficulty for alternative theories of gravity that don’t reduce to General Relativity!

What is gravity made of?

They proposed that gravity is actually made of quantum particles, which they called “gravitons.” Anywhere there is gravity, there would be gravitons: on earth, in solar systems, and most importantly in the miniscule infant universe where quantum fluctuations of gravitons sprung up, bending pockets of this tiny space- …

What is Newton’s 3 law?

Newton’s third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. For example, a book resting on a table applies a downward force equal to its weight on the table.