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 rider's upper body stationary while the lower body moves with the horse
- A. The rider is pushed backward by the air resistance
- B. The rider becomes suddenly afraid due to the horse's movement
- C. Inertia of rest keeps the rider's upper body stationary while the lower body moves with the horse
- D. None of the above
Explanation
When the horse starts running suddenly, the rider's body is subject to the law of inertia, which states that an object at rest will remain at rest unless acted upon by an external force. The rider's upper body remains at rest due to inertia while the lower body moves forward with the horse. This difference in motion causes the rider to lose balance and fall. This phenomenon is a direct application of Newton's first law of motion.The incorrect options either misattribute the cause to air resistance or emotion, which are not the primary factors in this physical scenario.
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