IF gravity doubled, THEN your weight would double. And acceleration and the force of gravity are indistinguishable from each other.
The speed of a freely falling ball would increase by approximately 9.8 m/s every second due to gravity. This acceleration of 9.8 m/s^2 is the acceleration due to gravity on Earth.
The speed reading on the speedometer would increase by approximately 9.8 meters per second for every second the ball falls, assuming it is falling under only the force of gravity. This rate of increase is due to the acceleration of gravity pulling the ball downwards.
If the mass of the object doubles while the force remains constant, the acceleration of the object will be halved. This is because acceleration is inversely proportional to mass according to Newton's second law, F = ma. Therefore, if mass increases, acceleration decreases.
Of course. You need to go back and review the definitions of those terms. Acceleration is the rate at which velocity changes. If velocity is not changing, then there is no acceleration. But the velocity doesn't have to be zero just because it's not changing. Velocity is the speed of an object and the direction in which it's moving. If it's moving at a constant speed in a straight line, then it has plenty of velocity. But since the speed isn't changing and the direction isn't changing, there's no acceleration. If acceleration comes along somehow ... such as by igniting a rocket motor, or gravity pulling the object downward, or someone reaching out and giving the object a push, then the speed or direction may change, and that'll be a change of velocity.
A change in velocity occurs when an object speeds up, slows down, or changes direction. This change is caused by forces acting upon the object, such as gravity, friction, or applied force. The acceleration of the object is directly related to the net force acting on it, as described by Newton's second law of motion.
The speed of a freely falling ball would increase by approximately 9.8 m/s every second due to gravity. This acceleration of 9.8 m/s^2 is the acceleration due to gravity on Earth.
You have to somehow add mass to it.
20 meters per second. This is because the acceleration due to gravity is equal to 20 meters per second per second, meaning the object's speed increases by 20 meters per second for each second of free fall.
Squeeze it somehow ... gravity works, so do pistons and cylinders.
Because otherwise if there was no gravity there would be no trees, therefore no oxygen so we would die, and if somehow we survived that then we will explode.
The speed reading on the speedometer would increase by approximately 9.8 meters per second for every second the ball falls, assuming it is falling under only the force of gravity. This rate of increase is due to the acceleration of gravity pulling the ball downwards.
No one will know somehow.
No. It is a myth that the spinning of the earth somehow causes or enhances gravity. A planet's gravity is a direct result of its mass, not its spin. The spin of the earth in fact counters gravity to an extremely small but measurable degree.
Planets can't really get out of their orbits because of gravity; if gravity somehow stopped having an effect, the planets would continue in a straight inertial line with inertia from the point at which gravity stopped.
Yes, a pendulum clock can be used to measure time in a spaceship orbiting around Earth as long as it is not influenced by the acceleration and deceleration forces of the spacecraft. In a zero-gravity environment, a pendulum clock would still oscillate at its regular rate and can be used to measure time intervals.
If an anti-gravity field were to somehow counteract the gravitational pull of a black hole, it could potentially prevent objects from falling into the black hole. However, the intense gravitational forces of the black hole would likely overpower any anti-gravity effects, making it unlikely for anti-gravity to have a significant impact on a black hole.
Maybe. Not 'they', but it is predicted that somehow the expansion of the universe suddenly stops, the universe will be pulled together by its own gravity, and will be crused to immense density. This is called the Big Crush or The Big Freeze. If this happens, there will be another big bang, maybe creating another universe.