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Q. A tennis player receives a volley with the ball (0.060 kg) travelling horizontally at 51m/s and returns the ball so that it travels horizontally at 42.00 m/s in the opposite direction. What is the work done on tennis ball?

Q. A football player runs the pattern by the three displacement vectors, , and . The magnitudes of these vectors are A = 4.00 m, B = 18.0 m, and C = 16.0 m. Using the component method, find out the (1) magnitude and (2) direction of the resultant vector. Take to be a positive angle.

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