Rankers Physics

Momentum Conservation: Practice Problem & Solution

A 6 kg box is travelling on ice at a speed of 9 m/s when a 12 kg packet is gently placed on it. The velocity will now be
3 m/s
4 m/s
6 m/s
8 m/s

Solution Explained:

To solve this problem, we apply the core principles of Momentum Conservation. Understanding the underlying formula is key to arriving at the correct answer below:

From Principal of conservation of momentum

m 1 v 1 = (m 1 + m 2 ) v

6 × 9 = ( 6 + 12) × v ⇒ v = 3 m/s

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