alleryRunaway truck ramps on highways work as:
AMovable pulleys
BRigid levers
CSimple wheels
DInclined planes
Answer & Solution
Correct answer: D. Inclined planes
1. The ramps are built to stop a truck whose brakes have failed.
2. They rise away from the road and are filled with sand or gravel.
3. They act as inclined planes.
4. So the answer is inclined planes.
_Source: syllabus Science, Ch 7 'Work, Energy, and Simple Machines'_
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