Chapter 5, Problem 13P

A crate pushed along the floor with velocity ${\stackrel{\to }{v}}_i$ slides a distance d after the pushing force is removed.

a. If the mass of the crate is doubled but the initial velocity is not changed, what distance does the crate slide before stopping? Explain.

b. If the initial velocity of the crate is doubled to 2 ${\stackrel{\to }{v}}_i$, but the mass is not changed, what distance does the crate slide before stopping? Explain.