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ahmed emad
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If I drive a plane and the force of engine is bigger than force of gravity of it , if the engine is turn on always ,and assuming no air , will the plane continue moving up and escape from the gravity ?
Ignore this or make it rocket instedjedishrfu said:If there's no air what does the engine push against to propel the plane forward?
You're correct, it will definitely escape. When you pick something up and keep it suspended, you're applying a force equal to gravity upwards, making net acceleration zero. If you have a larger upward force, net acceleration points upwards and so the body will go upwards indefinitely.ahmed emad said:I think it will escape from gravity but escape velocity lesson confused me
ahmed emad said:I think it will escape from gravity but escape velocity lesson confused me
The force of gravity is the force that pulls objects towards each other. It is the force that keeps us on the surface of the Earth and governs the motion of planets around the sun.
Gravity affects objects by pulling them towards the center of the Earth. The strength of the force depends on the mass of the objects and the distance between them. Objects with larger mass have a stronger gravitational pull than objects with smaller mass.
Objects fall to the ground because of the force of gravity. When an object is released from a height, the force of gravity pulls it towards the Earth, causing it to accelerate and eventually reach the ground.
Yes, an object can escape gravity if it has enough velocity to overcome the force of gravity. This is known as escape velocity and varies depending on the mass of the object and the gravitational pull of the celestial body it is escaping from.
Escape velocity differs on different planets because it is dependent on the mass and gravitational pull of the planet. Planets with larger mass and stronger gravitational pull will have a higher escape velocity. For example, the escape velocity on Earth is about 11.2 km/s, while on the moon it is only about 2.38 km/s.