Mechanical comprehension · Difficulty 1
Try this ASVAB-style question.
Choose your answer before opening the explanation. This original practice item is for preparation and does not reproduce an official test question.
Which surface usually produces the greatest friction?
- Rough dry concrete
- Smooth ice
- Lubricated steel
- Air cushion
Reveal answer and explanation
Rough dry concrete
Rough dry surfaces generally resist sliding more than smooth or lubricated surfaces.