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Using the principle of momentum conservation, m1v1 = (m1 + m2)v. The velocity v is determined as v = m1v1 / (m1 + m2). Given v1 = 36 km/hr = 10 m/s, m1 = 2 kg, and m2 = 3 kg, which of the following is correct?

1. v = m1v1 / (m1 + m2)
2. v1 is equivalent to 36 km/hr or 10 m/s
3. The values are m1 = 2 kg and m2 = 3 kg
4. The principle of momentum conservation is applied

Correct answer: v = m1v1 / (m1 + m2)

Solution

Option A is the correct answer as it directly represents the formula derived from the conservation of momentum for the given system.

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