x₀ = initial position of the Mrs. smith = 0 m
since Mrs. smith finally reach her daughter's house
x = final position of Mrs. smith = 23.5 m
d = displacement of Mrs. smith
displacement of Mrs. smith is given as
d = x - x₀
inserting the values
d = 23.5 - 0
d = 23.5 m
t = time of the trip = 17 min = 17 x 60 sec = 1020 sec
average velocity of Mrs. smith is given as
V = d/t
inserting the values
V = 23.5 /1020
V = 0.023 m/s
