Gravity

If you want to pretend that there are vampires, then you can go ahead and pretend

that they have whatever powers you want them to have. It's your story.

acceleration due to gravity of earth is 9.8ms-2

An acceleration is a velocity divided by a time, so you have:

acceleration = velocity / time

acceleration = (distance / time) / time

acceleration = distance / time2

The gravitational field can also be expressed as force / mass; this is equivalent to distance / time2.

To go against gravity, you need a force stronger than gravity pulling you upwards. This could be achieved by using a propulsion system like a rocket or thrusters. Alternatively, you could also use lift generated by wings, rotors, or engines to overcome the force of gravity.

That all depends on where you are. On the surface of the Earth, it's 9.807 .

It's 1.623 on the surface of the moon, and 3.711 on Mars. (All rounded.)

And it's not an "acceleration force". It's just acceleration. To get a force,

you have to multiply acceleration by a mass.

As per Law of Gravitation, there is no gravitational force on a massless object, so it

will not accelerate.

But mass-less object does not exist. It should have some mass and all objects fall down on

earth with same acceleration irrespective of their mass(if air resistance is neglected).

The gravitational force between two objects depends on their masses and the distance between them. The force of gravity increases with the mass of the objects and decreases as the distance between them increases.

GPE stands for gravitational potential energy in physics. It is the energy stored in an object due to its position in a gravitational field. GPE is calculated as the product of an object's mass, the acceleration due to gravity, and its height above a reference point.

Force is the first derivative of energy. The gravitation energy is

W = -mGm/r + cmV = -mvh/r + cP

Gravity energy is a Quaternion energy consisting of a scalar force -mGM/r and a vector energy cmV = cP a momentum vector energy, the so-called Dark Energy.

In addition physics does not recognize the four space derivative X,properly a Quaternion derivative, X =[d/dr, DEL].

With these reflections the Force is the first derivative and a Quaternion Force.

Force F= XW = [d/dr, DEL][ -vh/r ,cP]

F = [vh/r2 -cDEL.P, cdP/dr -DEL vh/r + cDELxP]

F = [vp/r - cp/r cos(P), -cp/r 1P + vp/r 1R + cp/r sin(P) 1RxP]

F = cp/r[v/c -cos(P), -1P + v/c 1R + sin(P) 1RXP]

cp/r = cp/ct=p/t = mv/t = ma.

The vector energy provides the centrifugal force that keeps the mass m from falling into the center. The centrifugal force is teh Divergence of the vector energy, cDEL.P = -cp/r cos(P).

It isn't quite clear what you mean. Depending on the context, gravity is either expressed as a force (measured in newton), or as a field (measured in newton/kilogram), so you can't compare it directly with a mass.

The pen is at rest as long as it is not moving relative to its surroundings. If the pen is stationary, it is considered to be at rest.

It's forced upwards by the pressure of the blood behind it. Additionally, there are valves in veins and arteries to stop the blood flowing backwards (kind of like a door that only opens one way).

The unit of acceleration is Length/Time2 .

It depends on how great the gravitational gradients are. Gravity follows the Inverse square law, so The gravitational attraction force between two point masses is directly proportional to the product of their masses and inversely proportional to the square of their separation distance . The force is always attractive and acts along the line joining them.(Wikipedia says this but my physics text book confirms, in case you wanted an exact answer) In extreme situations, like that found around stellar mass black holes, the gravitational gradient between say your head and feet is great enough that it will rip you in half, thus killing you. Don't believe me, look up spaghettification :-). In super massive black holes, you have to descend fairly deep into the black hole for the effect to take hold

Splashing around in a bath with low gravity would cause the water droplets to float rather than fall back into the bath. The droplets would likely form hovering globules that could be pushed around easily due to the reduced gravitational pull.

The value of acceleration due to gravity (g) on Earth is approximately 9.81 m/s^2. This value can vary slightly depending on the location on Earth due to factors like altitude and latitude.

Newton's 3 laws of motion:

1.) The law of inertia- An object will remain at rest unless acted on by an unbalanced force. An object in motion will remain in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

2.) Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed ( to accelerate it).

3.) For every action, there is an equal but opposite reaction.

The string that the 'bob' hangs from is a fixed length. So when the bob is off center

and over to one side, it must be a little higher than when it's hanging straight down.

The restoring force is the force of gravity that pulls it back down to the center.

Yes, according to our current understanding of physics, the speed of gravity is considered to be constant. It is believed to travel at the speed of light, which is approximately 186,282 miles per second. This means that changes in gravitational fields propagate through space at this speed.

If the force of gravity were to disappear suddenly, the mass of the body would remain the same, as mass is a measure of the amount of matter in an object and does not change. However, the weight of the body would become zero, since weight is the force exerted on an object due to gravity.

The speed of a ball thrown against gravity decreases because gravity acts in the opposite direction of the ball's motion, slowing it down. As the ball goes higher, it loses kinetic energy as it works against gravity, causing its speed to decrease until it reaches its peak and falls back down.

Yes, the gravity on Venus is about 91% of the gravity on Earth. So, a human on Venus would not be significantly squashed by the gravity, but they would feel heavier than on Earth due to the increased gravitational force.

A product with a specific gravity greater than 1 will sink in water. This means the product is denser than water.

To determine if a product will sink in water based on its specific gravity, compare the specific gravity of the product to that of water. If the specific gravity of the product is greater than 1, it will sink. If it is less than 1, it will float. The specific gravity is the ratio of the density of the product to the density of water.

When the distance between two objects is doubled, the strength of gravity decreases to one-fourth of its original value. This is because gravity follows an inverse square law, where the gravitational force is inversely proportional to the square of the distance between the objects.