A 15 kg mass moving with a velocity of 8 m/s East collides with a 5 kg mass moving in the opposite direction at 4 m/s. If the collision is perfectly inelastic, what is the value of the kinetic energy lost?
University of Ilorin PHY101 2026-test past question
- 150 J
- 270 J
- 420 J
- 520 J
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