Question

A point starts moving in a straight line with a certain acceleration. At a time t after beginning of
motion the acceleration suddenly becomes retardation of the same value. The time in which
the point returns to the initial point is
(A) 12t
(B) (2 + 2)
(C)
I
(D)
Cannot be predicted unless acceleration is given​

Answer 1

Answer:

Option (D) is the correct answer