A 80-kilogram rack star performs a workout preparing for a pole vault competition. The athlete starts from a rest on a horizontal surface and uniformly accelerates towards the bar at a top speed of 8.0 meters per second. The athlete sticks the pole into the ground and travels a vertical height of 5.7 meters and just clears the bar. Calculate the work done by friction by the athlete during the vault
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Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work
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A 80-kilogram rack star performs a workout preparing for a pole vault competition. The athlete start...
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