Question

b What are (i) free fall, ü) acceleration
due to gravity (iii) escape velocity (iv)
centripetal force ?​

Answer 1

Answer:

when object is falling freely in the influence of gravitational force is known as free fall

Answer 2

Answer:

A) FREEFALL

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.

B) ACCELERATION DUE TO GRAVITY

Acceleration due to gravity is the acceleration gained by an object due to gravitational force. Its SI unit is m/s2. It has both magnitude and direction, hence, it’s a vector quantity. Acceleration due to gravity is represented by g. The standard value of g on the surface of the earth at sea level is 9.8 m/s2.

C) CENTRIPETAL FORCE

A centripetal force is a net force that acts on an object to keep it moving along a circular path. ... Newton's 1ˢᵗ law tells us that an object will continue moving along a straight path unless acted on by an external force. The external force here is the centripetal force