Key Concept: Friction, Worn-out Materials
b) 36.5 m
[Solution Description]
Calculate the total number of steps in one year:
$10,000 \, \text{steps/day} \times 365 \, \text{days} = 3,650,000 \, \text{steps}$
Multiply the number of steps by the amount of wear per step to find the total wear:
$3,650,000 \, \text{steps} \times 0.01 \, \text{mm/step} = 36,500 \, \text{mm}$
Convert the result into meters:
$36,500 \, \text{mm} = 36.5 \, \text{m}$
Therefore, the sole will wear out by 36.5 meters in one year.
Your Answer is correct.
b) 36.5 m
[Solution Description]
Calculate the total number of steps in one year:
$10,000 \, \text{steps/day} \times 365 \, \text{days} = 3,650,000 \, \text{steps}$
Multiply the number of steps by the amount of wear per step to find the total wear:
$3,650,000 \, \text{steps} \times 0.01 \, \text{mm/step} = 36,500 \, \text{mm}$
Convert the result into meters:
$36,500 \, \text{mm} = 36.5 \, \text{m}$
Therefore, the sole will wear out by 36.5 meters in one year.