Question

When an object falls freely to the ground its acceleration is unifor give reason?

Answer 1

the acceleration to this body comes from the gravitational force of attraction between Earth and the object.

F = GMm/ r^2

applying Newton's 2nd law...

ma = GMm/r^2

=> a = GM/r^2

where r = R+h

h - height of the object from the Earth's surface

R - radius of the Earth

if the object is near the surface of Earth then

h <<<R

so, r = R+h

r = R (approx)

so, a = GM/R^2.......

so, a is constant or uniform....