Question

hii guys class 9 cbse physics plz plz tell fast all answer:
DEFINE FREE FALL. TELL ITS SI UNIT AND TELL ITS FORMULA AND EXPLAIN THE FORMULA

Answer 1

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.

The SI unit of acceleration is the meter per second squared [m/s2].

Free Fall Formula. Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling. ... Answer: You know that gravity, g = 9.8 m/s2, and time, t = 10 sec.

Answer 2

when the motion is in vertical direction under the influence of gravity is called freefall.its SI unit is metre per second square. its formula is equals to h= 1/2 gt^2. v^2= gh. v=gt