A 2.3-kg object traveling at 6.1 m/s collides head-on with a 3.5-kg object traveling in the opposite direction at 4.8 m/s. If the collision is perfectly elastic, what is the final speed of the 2.3-kg object?
A) 0.48 m/s
B) 7.1 m/s
C) 3.8 m/s
D) 4.3 m/s
E) 6.6 m/s

Question

Quizplus · Accepted Answer

In a perfectly elastic collision, both momentum and kinetic energy are conserved. Using these conservation laws, the final speed of the 2.3-kg object can be calculated to be 7.1 m/s.

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