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What are a) Free fall b) escape velocity
Answers
Explanation:
A. The falling of a body from a height towards the earth under gravitational force is called Free fall. Such a body is called freely falling body. ... The acceleration of an object falling freely towards the earth does not depend on mass of object. During free fall,heavier as well as light objects accelerate at same rate
B. In physics (specifically, celestial mechanics), escape velocity is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a massive body, that is, to achieve an infinite distance from it. ... Speeds higher than escape velocity have a positive speed at infinity.
Answer:
In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it.
In physics, escape velocity is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a massive body, that is, to achieve an infinite distance from it. Escape velocity is a function of the mass of the body and distance to the center of mass of the body.