well if you consider the ISS as constantly falling at the same time its moving away from the earth so it dosnt hit the ground all objects have to be in acceleration for that sort of free fall. but a parajumper in a free fall dose not have any acceleration but using there body they can use arms and legs to direct the air in away that it pushes them forward or backward.
Free fall. Airbus has built aircrafts that may dive with an acceleration of 9.81 m/s2 to simulate zero gravity. satellites are technically in a constant free fall. A world where no friction would occur would lead to constant acceleration as long as the force acting on the object stays the same.
Yes, when an object reaches its terminal speed, the acceleration becomes zero because the forces acting on the object (such as air resistance) have balanced out the force of gravity causing the object to fall at a constant speed. This constant speed is the terminal speed of the object.
The acceleration of an object by gravity depends on where the object is. The AVERAGE acceleration of gravity on the Earth is 9.81 m/s². Effective gravity on the Earth's surface varies by around 0.7%, from 9.7639 m/s2 on the Nevado Huascarán mountain in Peru to 9.8337 m/s2 at the surface of the Arctic Ocean.Of course if you drop an object on other bodies - such as the moon or Mars, the acceleration is MUCH different that it is on Earth.
The mass of an object is the same wherever the object is (even outer space), but its weight depends on how the mass is affected by gravity. So it's convenient to measure weight using scales. If the object was sitting on some scales as they were both falling to earth the scales would show zero because there would be no pressure from the object.
When acceleration is zero, the object's velocity can still be changing if the initial velocity is not zero. However, if acceleration is zero and the initial velocity is also zero, then the object's velocity will remain constant.
Free fall. Airbus has built aircrafts that may dive with an acceleration of 9.81 m/s2 to simulate zero gravity. satellites are technically in a constant free fall. A world where no friction would occur would lead to constant acceleration as long as the force acting on the object stays the same.
Yes, when an object reaches its terminal speed, the acceleration becomes zero because the forces acting on the object (such as air resistance) have balanced out the force of gravity causing the object to fall at a constant speed. This constant speed is the terminal speed of the object.
The acceleration of an object by gravity depends on where the object is. The AVERAGE acceleration of gravity on the Earth is 9.81 m/s². Effective gravity on the Earth's surface varies by around 0.7%, from 9.7639 m/s2 on the Nevado Huascarán mountain in Peru to 9.8337 m/s2 at the surface of the Arctic Ocean.Of course if you drop an object on other bodies - such as the moon or Mars, the acceleration is MUCH different that it is on Earth.
The mass of an object is the same wherever the object is (even outer space), but its weight depends on how the mass is affected by gravity. So it's convenient to measure weight using scales. If the object was sitting on some scales as they were both falling to earth the scales would show zero because there would be no pressure from the object.
When acceleration is zero, the object's velocity can still be changing if the initial velocity is not zero. However, if acceleration is zero and the initial velocity is also zero, then the object's velocity will remain constant.
I am not sure what you mean by reversing a zero acceleration. An object's acceleration can, of course, change over time.
As long as acceleration is zero, the object's velocity is constant.
The acceleration would also be zero in this case.
No, a stationary object cannot have a non zero angular acceleration. Angular acceleration is a measure of how an object's angular velocity changes over time, so if an object is not rotating, its angular acceleration is zero.
Yes. Acceleration is defined as a change of speed and/or direction of motion. If the speed and direction of motion are constant, then there is no acceleration.
As an object falls freely, its acceleration remains constant at approximately 9.8 m/s^2 until it reaches terminal velocity. Once it reaches terminal velocity, the acceleration becomes zero as the forces acting on the object balance out, resulting in a constant velocity.
At terminal velocity, the acceleration of a falling object is zero. Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium (such as air) through which it is falling equals the force of gravity.