Question

a body falling freely under the action of gravity is a uniform acceleration, uniform velocity or uniform motion ​

Answer 1

Answer:

uniform acceleration

Explanation:

according to newtonian mechanics ...  there is force of attraction between any 2 bodies in the universe is proportional to there product of masses and inversally proportional to the square of the distance between them

F = {G m1 . m21 }/r^2

   G is universal gravitational constant

therefore if a body is freely falling it is under the gravitational field of earth or any planet .. {Gm1.m2} /(r+h)^2= gm1  .... ( g is acceleration due to gravity .. m1 is the mass of object and m2 is the masss of earth.. h is height of object. ... we know F= ma = mg )

( earth is very large compare to object ( it attracts objects to its centre ) ...therefore h is negligible )

g = Gm2 / r^2 = 9.8 .... by putting the value of mass of earth and and its radius to the centre .. we are able to get the value of g ..