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.
- It is given that at some point or points in the path \( |\alpha | \geq K \), where \(K \) is a natural number.
Compute \(K \).