Question

Select One Option Correct from the following : A particle of mass m moves on the x-axis as follows: it starts from rest at t = 0 from the point x = 0, and comes to rest at t = 1 at the point x = 1. No other information is available about its motion at intermediate times (0 < t <1). If $\alpha$ denotes the instantaneous acceleration of the particle, then,
(A) $\alpha$ cannot remain positive for all t in the interval $0 \leq t \leq 1$.
(B) $|\alpha|$ cannot exceed 2 at any point in its path.
(C) $|\alpha|$ must be $\geq 4$ at some point or points in its path.
(D) $|\alpha|$ must change sign during the motion, but no other assertion can be made with the information given.

Answer 1

d option is correct.
mark brainliest if you

Answer 2

Select One Option Correct from the following : A particle of mass m moves on the x-axis as follows: it starts from rest at t = 0 from the point x = 0, and comes to rest at t = 1 at the point x = 1. No other information is available about its motion at intermediate times (0 < t <1). If $\alpha$ denotes the instantaneous acceleration of the particle, then,

(A) $\alpha$ cannot remain positive for all t in the interval $0 \leq t \leq 1$.

(B) $|\alpha|$ cannot exceed 2 at any point in its path.

(C) $|\alpha|$ must be $\geq 4$ at some point or points in its path.

✔️(D) $|\alpha|$ must change sign during the motion, but no other assertion can be made with the information given.