Answer:
Distance
Speed = ----------------
Time
Distance/Displacement
1.5m/s = ------------------------------------------
10s
Distance
1.5m/s × 10 = --------------------- × 10
10s
(Get rid of the fraction by multiplying it by the denominator in this case 10)
15m = Distance
Distance and Displacement are almost the same thing regarding this question. But watch out when you doing other questions and when you have initial velocity and initial time.
Displacement is 15m.