A rider on a horse back falls when the horse starts running all of a sudden because:
Correct answer: C. Inertia of rest keeps the upper part of the body at rest whereas the lower part of the body moves forwards with the horse
- A. Rider is taken back
- B. Rider is suddenly afraid of falling
- C. Inertia of rest keeps the upper part of the body at rest whereas the lower part of the body moves forwards with the horse
- D. None of the above
Explanation
This is an example of inertia: when the horse accelerates forward, the rider's lower body is accelerated by the horse while the upper body tends to remain in its prior state. The resulting relative motion between body parts can unbalance the rider and cause a fall.
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