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8.3 Exercise 13

Avg difficulty 2.5

A boy throws a ball of mass 0.25kg0.25 \text{kg} straight upward with an initial speed of 20m/s20 \text{m} / \text{s} When the ball returns to the boy, its speed is 17m/s17 \text{m} / \text{s} How much much work does air resistance do on the ball during its flight?

OpenStax University Physics Volume 1, 8.3 Conservation of Energy, exercise 13

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Adapted from University Physics Volume 1 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 1. Imported at revision db44eb9.