Particle motion is described by several phrases that are very similar, but have important differences. Work with your classmates to compare and contrast the following phrases and to describe the difference: (a) "the particle has a speed of 5 m/s" vs. "the particle has a velocity of 5 m/s" (b) "the particle is speeding up" vs. "the particle has positive acceleration" (c) "displacement" vs. "total distance traveled"