15. What's the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? Round to the nearest hundredth. A. 37.43 m/s B. 36.5 m/s C. 35.67 m/s D. 34.78 m/s
Question
- What's the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? Round to the nearest hundredth. A. 37.43 m/s B. 36.5 m/s C. 35.67 m/s D. 34.78 m/s
Solution
The velocity of an object can be calculated using the formula for momentum, which is mass times velocity (p=mv).
Given: Momentum (p) = 4000 kg-m/s Mass (m) = 115 kg
We need to find the velocity (v), so we rearrange the formula to solve for v:
v = p/m
Substituting the given values:
v = 4000 kg-m/s / 115 kg = 34.78 m/s
So, the velocity of the object is approximately 34.78 m/s. Therefore, the correct answer is D. 34.78 m/s.
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