A quarterback back pedals 2.5 meters northward and then
runs 6.8 meters southward.

The travels is 9.3 and displacement of 4.3 meters

Explanation:

The computation of distance and displacement is shown below:-

Distance = Northward meters + Southward meters

= 2.5 meters + 6.8 meters

= 9.3 meters

Displacement= Final - Initial distance

= 6.8 meters - 2.5  meters

= 4.3 meters

Direction→southward

Here direction is going towards the southwards as southwards distance in higher than the northward distance of displacement is southward.

the one with the highest speed

answer: a. same unit

explanation: