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A 0.240 kg ball moves at a speed of 3.0m/s strikes a wall and bounces straight back at 2.40m/s. The collision lasts 0.0150s. How much kinetice energy in joules is lost during the collision?

Wouln't you just subtract the final KE from the initial KE? That is my understanding of conservation of energy.

o yea!

thNKS

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