A particle moves in one dimension along the 𝑥-axis, bouncing between two perfectly reflecting walls at 𝑥 = 0 and 𝑥 = 𝑙. In between collisions with the walls no forces act on the particle. Suppose there is an uncertainty Delta 𝑣0 in the initial velocity 𝑣0. Determine the corresponding uncertainty Delta 𝑥 in the position of the particle after time 𝑡.