Question

what are (i)free fall,(ii)acceleration due to gravity (iii)escape velocity (iv)centripetal force???​

Answer 1

1.downward movement under the force of gravity only.

2.In physics, gravitational acceleration is the free fall acceleration of an object in vacuum — without any drag.

3.This is the steady gain in speed caused exclusively by the force of gravitational attraction

the lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.

4.a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.

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Answer 2

Answer:

1. centripetal force: the force acting on any moving in a circle and directed towards the centre of the circle is called as centripetal force
2. Acceleration due to gravity : The acceleration produced in a body under the influence of the force of gravity Alone is called acceleration of the gravity
3. Free fall: The motion of any object under the influence of the force of gravity Alone is called as free fall
4. Escape velocity: the minimum velocity with which a body should be projected from the surface of a planet or moon ,so that it escape from the gravitational influence of the planet or moon is called escape velocity

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