Question

numericals on equations of motion of free falling object class 11

Answer 1

Freely falling motion of any body under the effect of gravity is an example of uniformly accelerated motion.
Kinematic equation of motion under gravity can be obtained by replacing acceleration 'a' in equations of motion by acceleration due to gravity 'g'.
Value of g is equal to 9.8 m.s-2.
Thus kinematic equations of motion under gravity are
v = v0 + gt (16a)
x = v0t + ½ ( gt2 ) (16b)
v2 = (v0)2 + 2gx (16c)
The value of g is taken positive when the body falls vertically downwards and negative when the body is projected up against gravity.