For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 40 mph? Suppose that ?s=1.00, ?k=0.80, and ?r=0.02.
For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from...
For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 50 mph? Suppose that μs=1.00, μk=0.80, and μr=0.02. It's possible for a determined group of people to pull an aircraft. Drag is negligible at low speeds, and the only force impeding motion is the rolling friction of the rubber tires on the concrete runway. In 2000, a team of 60 British police officers set a world record by pulling a Boeing 747,...
1) It is friction that provides the force for a car to accelerate, so for high-performance cars the factor that limits acceleration isn't the engine; it's the tires. Part A For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 70 mph? Suppose that ?s=1.00, ?k=0.80, and ?r=0.02. 2.) The forces in (Figure 1) are acting on a 1.0 kg object. What is ax, the x-component of the object's acceleration? 3.)A crate...
1) It is friction that provides the force for a car to accelerate, so for high-performance cars the factor that limits acceleration isn't the engine; it's the tires. For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 60 mph? Suppose that μs=1.00 and μk=0.80. Express your answer to two significant figures and include the appropriate units. 2) A 22 cm diameter bowling ball has a terminal speed of 69 m/s. Suppose...
1. A 1900 kg car traveling at a speed of 24 m/sskids to a halt on wet concrete where μk = 0.50. a. How long are the skid marks in meters.? 2. For typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 40mph? Suppose that μs=1.00 and μk=0.80. 3. A 17 kg crate is placed on a horizontal conveyor belt. The materials are such that μs = 0.43 and μk= 0.25. a....
draw free body diagram
A boxed cake is placed in the trunk of a car to be delivered to a birthday party. The coefficient of static friction is 0.15 and for kinetic friction is 0.11. What is the minimum 0-60 mph time that the car can accelerate and keep the box from sliding? In other words, what is the shortest time for the driver to accelerate from a stop up to 60 mph and not have the box slide back...
Rubber tires on dry concrete pavement has a coefficient of kinetic friction of 0.62, what is the shortest distance (in meters) in which you can stop an automobile with an initial velocity of 46.9 m/s?
6. Estimate the angular acceleration of the wheels on your car in a typical start from zero to 30 m/s. This does not mean some wild, unjustified number of radians/s?. It does mean making at least two numerical estimates and using them in at least 3 equations, all of which must be shown to get credit on this one. If you need some hints, check the Discussion section on Canvas. 7. The maximum pressure Portland cement concrete can withstand under...
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6. Estimate the angular acceleration of the wheels on your car in a typical start from zero to 30 m/s. This does not mean some wild, unjustified number of radians/s2. It does mean making at least two numerical estimates and using them in at least 3 equations, all of which must be shown to get credit on this one. If you need some hints, check the Discussion section on Canvas 7. The maximum pressure Portland cement concrete can withstand...
A 1500-kg car starts from rest and accelerates uniformly to 18.0 m/s in 12.0 s over a dry concrete road. Assume that kinetic friction remains constant at 400 N during this time. – (a) Find the net work done on the car and the work done by the engine. – (b) How many revolutions does each tire make over the 12.0 s interval? What is the angular speed of the wheels when the car has traveled half the total distance?...
In a comprehensive road test on new car models, one variable measured is the time it takes the car to accelerate from 0 to 60 miles per hour. To model acceleration time, a regression analysis is conducted on a random sample of 129 new cars. TIME60: y = Elapsed time (in seconds) from 0 mph to 60 mph MAX x = Maximum speed attained (miles per hour) The simple linear model E(y) = Bo + Bjx was fit to the...