Which of the following is a displacement?

a. 5 m/s

c. - 0.7 m/s2

b. 10 ft

d. 3 blocks east

"Displacement" is a distance with a direction.

a). No; that's a speed.

b). No; that's an acceleration without its direction.

c). No; that's a distance without a direction.

d). Yay! A distance with a direction. A true displacement!