A force of 5 newton acts on a body of weight 9.80 newton. What is the acceleration produced in m s-2?
Correct answer: C. 5.00
- A. 0.51
- B. 1.96
- C. 5.00
- D. 49.00
Explanation
To determine the acceleration, apply Newton's second law: F = ma. Start by calculating the body's mass from its weight: W = mg, where g = 9.8 m/s2. Therefore, m = W/g = 9.8 N / 9.8 m/s2 = 1 kg. Next, use the formula a = F/m to find the acceleration: a = 5 N / 1 kg = 5.0 m/s-2. Hence, the correct answer is 5.0 m/s-2.Option A results from an incorrect mass assumption. Option B likely arises from using an incorrect value for gravitational acceleration. Option D is a gross overestimate, suggesting a misunderstanding of the calculation process.
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