Answer :
Final answer:
Correct option is A). The normal force on a 10 kg object at rest on a flat surface is equal to its weight which is calculated as 10 kg * 9.80 m/s², resulting in 98.1 N .
Explanation:
The normal force that an object experiences while resting on a flat surface is equal to the object's weight when there are no other vertical forces acting on it. In this case, the normal force acts to oppose the force of gravity on the object. Since the object has a mass of 10 kg and using the acceleration due to gravity on Earth, which is 9.80 m/s², we can calculate its weight using the formula w = mg. Thus, the weight of the object is (10 kg)(9.80 m/s²) = 98 N. This is also the magnitude of the normal force experienced by the object. Therefore, the correct answer is 98.1 N (Option A), as normal force and weight are equal in this scenario.
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