Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 19 minutes. The density of air is 1.20 kg/m3 Determine the drag force on the runner during the race. Suppose that the runner has the cross section area of 0.72 m2 and the drag coefficient of 1.2. What is this force as a fraction of the runner's weight?

Q: Mary applies a force of 70 N to push a box with an acceleration of 0.60 m/s2. When she increases the…

A: The forces acting on the box are the force applied by Mary in the direction of motion of box and…

Q: Just like Louis, Maria left a book on the roof of her car before driving away. The mass of the book…

A: mass of the book (m) = 731 grams = 0.731 kg coefficient of static friction (μs) = 0.29 coefficient…

Q: A 171 N sled is pulled up a 32 degree slope at a constant speed by a force of 187 N. What is the…

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Q: A 172 N sled is pulled up a 31 degree slope at a constant speed by a force of 156 N. What is the…

A: weight of sled =mg = 172 N angle =  31 degrees force = F = 156 N

Q: Mary applies a force of 71 N to push a box with an acceleration of 0.52 m/s². When she increases the…

A:

Q: A box with with a mass m = 2kg is being pushed up a ramp by an unknown pushing force Fp. The…

A: The free-body diagram is , Given, m=2kg' The velocity is constant so, the acceleration is constant…

Q: A tennis ball is thrown at 25 m/s on a day when the wind speed is 0 m/s.  What is the drag force…

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Q: Of the following statements, indicate on the line whether they are true (T) or false (F): ___ The…

A: Given  Let the friction force between two surface is given as F,  Let m be the mass of object , and…

Q: A 7.5 kg backpack is sliding across the floor. The coefficient of friction between the backpack and…

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Q: In the Wall of Death carnival attraction, stunt motorcyclists ride around the inside of a large,…

A: Diameter of cylinder = 12 mcoefficient of static friction between the riders' tires and the wall is…

Q: A 6.00 kg sled is pulled across a frictionless horizontal surface by a rope that makes a 42 degree…

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A: Given :  Mass of table, M =  100 kg  Mass of box, m = 20 kg  Coefficient of static friction, u = 0.4…

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A: Use Newton's second law F→=ma→a→=F→m

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A: Given data:  Mass (m) = 13 g = 0.013 kg Displacement (d) = 32 cm = 0.32 m Initial velocity (Vi) = 68…

Q: Compared with the force needed to keep a box to slide at constant velocity on a coarse surface, to…

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Q: Block m has a mass of 16 kg.  Block M has a mass of 88 kg.  If there is no friction between block M…

A: Mass of block m is m=16 kg. Mass of block M is M=88 kg. The coefficient of friction between block m…

Q: An object sitting at rest on a level surface has a weight and a normal force of 200 N. The…

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Q: A car is a height of 1.6 meters and width of 2 meters. (the length is immaterial). The following is…

A: The drag force on the car can be calculated using the drag equation:Where:​ is the drag force. is…

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A: Draw a free-body diagram of the system.

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A: free body diagram    given

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Q: An 60 kg astronaut travel from earth to moon, where the gravity of moon is 1.6 m s 2. What is the…

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Q: A block is being pulled up an inclined plane by a force with magnitude F=45.0 N as shown In the…

A:

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A: Given: θ1=27.1°θ2=25.7° T1=711 N Free Body Diagram:

Q: The Drag Force on a race car travelling with a velocity of vis given by, FD = 1/2 CD APV ² Where:…

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Q: The coefficient of friction between the wheels of Yamaha motorcycle and the dry pavement is 0.79. An…

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Q: A 189 N sled is pulled up a 30 degree slope at a constant speed by a force of 176 N. What is the…

A: