Learning Goal: To be able to calculate work done by a constant force directed at different angles relative to displacement If an object undergoes displacement while being acted upon by a force (or several forces), it is said that work is being done on the object. If the object is moving in a straight line and the displacement and the force are known, the work done by the forop can be calculated as W = Fs cos 0, where W is the work done by force on the object that undernnee dienlanamant directed at onnio A ralative to Figure 12 N 40% 15 N 30 N 30° 18 N 160 m 2 of 2 B Part H Find the work W done by the 18-newton force. Use two significant figures in your answer. Express your answer in joules. W = Submit [5] ΑΣΦ 1990 Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part I Complete previous part(s) Part J Complete previous part(s) Part K Complete previous part(s) Provide Feedback P Pearson ? J Next > eplay 5670

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Problem 4: Speed deamplifier. In the figure above on the right, block 1 of mass m1 slides along an x-axis on a frictionless floor at speed 4 m/sec.Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 2m1. Next, block 2 undergoes a one-dimensional elastic collision with stationary block 3 of mass mz = 4m1. What then is the speed of block 3? Answer: 16 m/sec or 1.78 m/sec.