Unformatted text preview: kg/m^3 and the athlete runs at 7 m/s. What will be the work done by the athlete 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 an area of 0.13 meters squared with a coefficient of drag equal to 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? 4. A 80 kg skydiver opens up his parachute and begins a gentle descent to the ground. The coefficient of drag acting on the parachute is 1.5 and the area of the parachute is 30 square meters. The density of air is 1 kg/m^3. What is the terminal velocity that the skydiver will reach in his parachute?...
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 Winter '11
 seeley
 Force, terminal velocity, peak bone mass, greater bone growth

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