A boy jumps off a moving bus and falls forward. The reason is:
AInertia of rest of his body
BInertia of direction
CInertia of motion of his body
DFriction with the road
Answer & Solution
Correct answer: C. Inertia of motion of his body
1. The boy was moving with the bus, so his body had the same forward velocity.
2. When his feet hit the road, his feet slow down due to friction.
3. His upper body continues to move forward due to its inertia of motion.
4. As a result, the upper body falls forward.
5. Option A would apply if the bus had been at rest; option C deals with circular paths.
_Source: Selina Concise Physics ICSE Class 9, Ch 3 'Laws of Motion' (aplustopper.com extract)_
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