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A 500 g hockey puck slides across frictionless ice with an initial speed of 2.0 m/s. A compressed air gun is used to exert a 1.0 N force on the puck and is aimed at the puck’s front edge at 30° below the horizontal. This force is applied continuously as the puck moves 50 cm. What is the puck’s final speed?
answer is 2.39m/s. please show how.
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