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Dilawar Ali
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it is said that a settelite is a free falling body. For free falling body its velocity should free continuesly increasing. Is it true? I am confused..
yeah i know, a quantity which need both magnitude and direction for complete discriptionDaleSpam said:What is confusing? Do you know what a vector is?
DaleSpam said:Also, do you know what it means to break a vector into components?
DaleSpam said:OK, so velocity and acceleration each are vectors. Each has a magnitude and each has a direction. Their directions may be different. Does that make sense?
Exactly. The horizontal component is the component perpendicular to gravity and the vertical component is the component parallel to gravity.Dilawar Ali said:yeah resolving in vertical and horizontal components
DaleSpam said:Exactly. The horizontal component is the component perpendicular to gravity and the vertical component is the component parallel to gravity.
Just like you can break velocity into components parallel and perpendicular to gravity, you could instead break gravity into components parallel and perpendicular to velocity.
Does that idea make sense?
mnmman said:Imagine firing a gun.
Free fall is the motion of an object where only gravity is acting on it, causing it to accelerate towards the ground without any other forces acting on it. This is the same type of motion that objects experience when they are dropped from a height.
Yes, a satellite is in a state of continuous free fall. Although it may appear to be floating in space, it is actually being pulled towards the Earth by its gravitational force. However, the satellite is moving horizontally at a fast enough speed that it never reaches the ground.
A satellite stays in orbit because of its high velocity and the curvature of the Earth's surface. The satellite is constantly falling towards the Earth, but its horizontal velocity allows it to continually miss the Earth and maintain its circular path around the planet.
A satellite is able to maintain its orbit because of the balance between its forward velocity and the pull of gravity. As long as its velocity remains constant, the satellite will continue to orbit the Earth without falling back to the surface.
No, a satellite cannot stop free falling unless it is acted upon by an external force. As long as the gravitational force of the Earth is present, the satellite will continue to be in a state of free fall. However, its trajectory and speed can be altered by using thrusters or other means of propulsion.