Question
The displacement x of a particle varies with time t as x2= 1+t2 . What is its acceleration?
Joshi sir comment
on diffrentiation we will get
2xdx/dt = 2t
so xv = t (1)
on differentiating again
xdv/dt + vdx/dt = 1
or xa + v2 = 1 (2)
now put v from (1) to (2) we will get answer