1. As part of a training regimen, an athlete runs with a parachute. The parachut
ID: 2240616 • Letter: 1
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1. As part of a training regimen, an athlete runs with a parachute. The parachute has an area of 4 meters squared and a coefficient of drag equal to 0.8. The density of air is 1.00 kg/m^3 and the athlete runs at 7 m/s. What will be the work done by the athlete, against the air, after running 50 meters? 2. How much more work will the athlete do if he increases his velocity to 8.5 m/s? 3. A rower pulls his oar through the water at a velocity of 0.9 m/s, relative to the water. The density of water is 1000 kg/m^3 and the paddle has a surface area (perpendicular to the fluid flow) of 0.13 m^2 with a coefficient of drag of 1.4. The paddle is located at the end of an oar, 2.2 meters from a pivot point on the edge of the boat. Assuming that the drag force is always perpendicular to the oar, what is the torque of the drag force on the oar? 1. As part of a training regimen, an athlete runs with a parachute. The parachute has an area of 4 meters squared and a coefficient of drag equal to 0.8. The density of air is 1.00 kg/m^3 and the athlete runs at 7 m/s. What will be the work done by the athlete, against the air, after running 50 meters? 2. How much more work will the athlete do if he increases his velocity to 8.5 m/s? 3. A rower pulls his oar through the water at a velocity of 0.9 m/s, relative to the water. The density of water is 1000 kg/m^3 and the paddle has a surface area (perpendicular to the fluid flow) of 0.13 m^2 with a coefficient of drag of 1.4. The paddle is located at the end of an oar, 2.2 meters from a pivot point on the edge of the boat. Assuming that the drag force is always perpendicular to the oar, what is the torque of the drag force on the oar?Explanation / Answer
1)
Fdrag =
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