A 20 point 0 kilograms object is at rest, and then speeds up to 16.0 meters per second How much work was done on this system?

By the work–energy theorem, the work done equals the change in kinetic energy. Starting from rest, the change is ½(20.0 kg)(16.0 m/s)² = 2,560 J, so the correct choice is 2,560 J.

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