Gravity

Well, the ball thrown upward is obviously in the air longer before it hits the ground.
It goes up for a while, before its upward speed drops to zero and it starts falling, so
it effectively begins its drop from a higher altitude than a ball that you drop from
your hand or throw horizontally.

I think what you're really wanting to ask is: Which hits the ground first ... a ball thrown
horizontally or a ball just dropped from your hand ? The answer to THAT one is: If you
ignore air resistance, then they both hit the ground at the same time.

For that matter . . . if you ignore air resistance, then it doesn't even matter if one of them
is a bowling ball and the other one is a ping pong ball or a feather. They still both hit the
ground at the same time !

Weird, no ?

That force is called gravity. Gravity is a force of attraction that pulls objects with mass toward one another. The strength of gravity depends on the mass of the objects and the distance between them.

Force is affected by gravity in that objects experience a force due to gravity pulling them toward the center of the Earth. The force of gravity is proportional to an object's mass, so objects with greater mass experience a greater gravitational force. This force of gravity can affect the motion of objects, such as causing objects to fall towards the ground.

Another name for gravity is gravitational force. It is the force of attraction that exists between any two objects with mass.

1. Achieve escape velocity: By accelerating an object to a speed greater than the escape velocity of a planet or celestial body, it can escape the gravitational pull.
2. Utilize propulsion systems: Using rockets or other propulsion methods to counteract the force of gravity and lift off from Earth or another planetary body.

People can escape gravity by achieving escape velocity, which is the speed needed to break free from Earth's gravitational pull. Alternatively, people can experience temporary weightlessness during a free fall in microgravity environments, such as in parabolic flight or in space.

The specific gravity of perchloroethylene is approximately 1.62 at 20°C.

Well, here are a few that I can think of . . .

-- the speed at which the object is plowing through the air
-- the density of the air through which the object is plowing
-- the local turbulence in the air that was there before the object came along
-- the physical size of the object
-- the shape of the object
-- the object's surface texture

Helium defies gravity because it is lighter than the air around it. This causes it to rise upwards, creating a buoyant force that opposes gravity. This is why helium balloons float in the air.

The force of gravity on Earth is approximately 9.81 newtons per kilogram.

Isaac Newton's formula for gravity is given by the equation F = G * (m1 * m2) / r^2, where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between the centers of the two objects.

Gravity causes massive collisions by attracting objects with mass towards each other. When two massive objects are traveling towards each other due to gravitational pull, they can collide with great force, releasing a huge amount of energy. This process is seen in celestial bodies such as galaxies, stars, and planets.

Creating artificial gravity in a weightless environment, such as space, is important for maintaining the health and well-being of astronauts over long-duration missions. It helps prevent the negative effects of prolonged exposure to weightlessness, such as muscle and bone loss, cardiovascular deconditioning, and fluid shift in the body. By simulating gravity through spinning habitats or other technologies, astronauts can stay healthier and perform tasks more effectively in space.

Force can be represented by vectors, which include magnitude (strength) and direction. It can also be represented by mathematical equations, such as Newton's second law (F = ma) or by diagrams showing the interactions between different objects. Additionally, force can be represented through physical measurements like pressure or tension.

yes because the sun is in the middle and it has to orbit around the sun so when its winter the go to the shade of black and when its summer the sun is mostly on that part.

Acceleration is the rate at which velocity changes over time, while gravity is the force of attraction between two objects due to their mass. Acceleration can be caused by various factors like gravity, friction, or propulsion, whereas gravity is a fundamental force that exists between all objects with mass.

-- The mass of one object.

-- The mass of the other object.

-- The distance between their centers of mass.

The X component in projectile motion isn't impacted by gravity, but the Y component is. Since the Y component is impacted by gravity (also assuming you're on Earth) ...

The Y component's acceleration will be ~ +- 9.81 m/s^2

The X component is assumed to be 0 m/s^2 (disregard air resistance)

You can also assume the X component's velocity remains constant since there is 0 acceleration.

Using that information and information given, solve for time (using Kinematic formulas) and you should be able to derive all the information you need for projectile motion from that information. Hope that helps!

it will cause a push on your spine

Gravity is the natural force that causes objects with mass to attract each other. On Earth, gravity is what keeps us grounded and gives weight to objects. Gravity also governs the motion of celestial bodies in space.

Gravity is a fundamental force in nature that is determined by the mass and distance between objects. It is controlled by the distribution of mass in the universe, with larger masses creating stronger gravitational pulls. According to general relativity, gravity is the curvature of spacetime caused by mass and energy.

Weight is felt by the body resisting the pull (acceleration) of gravity. Less acceleration means less pull thus less weight. The rate at which you are accelerating downward subtracts from the pull of gravity, thus your weight is less. If you fall, say from a cliff or tall building you accelerate downward at exactly the acceleration of gravity so you're completely weightless.

The universal law of gravity, formulated by Sir Isaac Newton, states that every mass attracts every other mass in the universe with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This law explains how objects are attracted to each other and is responsible for phenomena like the motion of planets around the sun.

Objects will always be pulled to the center of the mass.