Very Short Question and Answers - Free fall

Free fall refers to the motion of an object where it falls under the influence of gravity alone, with no other forces acting on it.

Free fall is related to the Second Law of Motion as it demonstrates that the force acting on an object (gravity) causes it to accelerate at a constant rate, which is the essence of the second law (F = ma).

The value of g can be calculated using the formula g = F/m, where F is the gravitational force acting on an object and m is the mass of that object.

The motion of objects under the influence of gravitational force of the Earth is characterized by acceleration towards the center of the Earth at a rate of approximately 9.8 m/s², known as the acceleration due to gravity.

The acceleration due to gravity, denoted as g, is the acceleration experienced by an object in free fall under the influence of Earth's gravitational pull, with a standard value of approximately 9.8 m/s².

The weight of an object decreases when taken from the poles to the equator because the value of g is greater at the poles than at the equator.

A sheet of paper falls slower than a crumpled ball because the larger surface area of the paper encounters more air resistance, while the crumpled ball has a smaller surface area, reducing air resistance.

The universal law of gravitation states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

The universal law of gravitation explains phenomena such as the force that binds us to the Earth, the motion of the Moon around the Earth, the motion of planets around the Sun, and the tides caused by the Moon and the Sun.

In a vacuum, all objects fall at the same rate because there is no air resistance, allowing gravity to act equally on all masses.

Galileo's experiment demonstrated that the time it takes for objects to fall is independent of their mass, showing that all objects fall at the same rate in the absence of air resistance.

The value of g is greater at the poles than at the equator due to the Earth's rotation and its oblate spheroid shape.

Air resistance opposes the motion of falling objects, causing them to fall more slowly than they would in a vacuum.

The distance fallen during free fall can be calculated using the formula s = ut + 1/2 at², where u is the initial velocity, a is the acceleration due to gravity, and t is the time.

An object thrown upwards reaches its maximum height when its velocity becomes zero before it starts falling back down.

The acceleration due to gravity is affected by the mass of the Earth and the distance from the center of the Earth.

Yes, the value of g decreases with increasing altitude because the distance from the center of the Earth increases.

Gravity is the force that keeps planets in orbit around the Sun and governs the motion of celestial bodies in the solar system.

If the masses of both objects are doubled, the gravitational force between them also doubles, according to the universal law of gravitation.

The gravitational force between two objects decreases as the distance between them increases, following an inverse square relationship.