Answer :
Answer:
b) 67.5 N
Explanation:
Force (F) = mass (m) × acceleration (a)
The mass (m) is 45 kg, and the acceleration (a) is 1.5 m/s². Plug these values into the formula:
F = 45 kg × 1.5 m/s²
F = 67.5 N
So, the force created by the person is 67.5 Newtons.
Final answer:
The force exerted by a 45 kg person accelerating at a rate of 1.5 m/s², as per Newton's second law of motion, is 67.5 N.
Explanation:
The subject of the student's question is Physics. The grade level of the question is suitable for high school students. The student is asking about the force exerted by a person of certain mass accelerating at a particular rate. This concept is governed by Newton's second law of motion, which states that the force exerted on an object is equal to its mass times its acceleration (F=ma).
In this case, the person's mass (m) is 45 kg and the acceleration (a) is 1.5 m/s². Substituting these values into the equation gives us the force (F): F = 45 kg * 1.5 m/s² = 67.5 N. Hence, the force created by the person is 67.5 N, which corresponds to option b.
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