a 1,100 kg car is moving on a horizontal road at 21 m/s when it's breaks are applied and the car skids to a stop at 36m. Use the concepts of work and energy to find the friction force between the car's tires and the road.
a 1,100 kg car is moving on a horizontal road at 21 m/s when it's breaks...
The driver of a car of mass M which is moving along a straight road with initial speed v0 sees a deer in her headlights, and reacts quickly, lifting her foot of the gas and applying the brake pedal with maximum force. The anti-lock brakes cause the largest possible static friction force to be applied on the tires by the road, which continue to roll so the car does not skid. The coefficient of static friction between the tires and...
A car is travelling at 20m/s on a horizontal road. The brakes suddenly are applied and the car skids to a stop in 40 s with a constant acceleration. a) Draw a free body diagram for the car? b) Write newton's second law in the vector form and project it on the reference system. c) What is the coefficient of kinetic friction between the tires and road?
A car is traveling up a road inclined at an angle Theta above the horizontal. The driver slams on the brakes and skids to a stop. The coefficient of kinetic friction between the tires and the pavement for the car sliding to a stop is mu_k. Find an expression for the acceleration of the car as it slides to a stop. Using your result above, find the numerical value of the car's acceleration if Theta = 8.0 degree and mu_k...
2. A 2500 kg car is driving at 65.0 km/h on a horizontal level road. As it approaches a stoplight the light turns red so the brakes are applied as the car hits a patch ofice. With the brakes locked, the car travels 55.0 m before coming to a stop. A) What is the initial kinetic energy of the car? B) How much work is done by friction in stopping the car? c) What is the force of friction stopping...
A driver in a 1000 kg car travelling at 20 m/s slams on the brakes and skids to a stop. If the coefficient of friction between the tires and the horizontal road is 0.80, how long will the skid marks be? A) 33m B) 24m C) 21m D)26m
gth of the Cirrl 1. A 1300 kg car moving on a flat, horizontal road negotiates a curve as shown in figure. If the radius of the curve is 40 m and the coefficient of static friction between the tires and dry pavement is 0.6, find the maximum speed the car can have and still make the turn successfully.
A 1200 kg car is coasting on a horizontal road with a speed of 18 m/s . After passing over an unpaved, sandy stretch 35.0 m long, car's speed has decreased to 12 m/s . Part A Was the net work done on the car positive, negative, or zero? Part B Find the magnitude of the average net force on the car in the sandy section of the road. Express your answer to two significant figures and include the appropriate...
question 1 A block of mass m is pulled at constant velocity along a rough horizontal floor by an applied force � as shown. What is the magnitude of frictional force? Write your answer in terms of m, g, T, or q. question 2 An 8000-N car is traveling at 12 m/s along a horizontal road when the brakes are applied. The car skids to a stop in 4.0 s. How much kinetic energy does the car lose in this...
You are driving at 30m/s and hit your breaks, skidding to a stop. The static coefficient of friction between your tires and the road is μs = 0.7. The mass of your car is 1500 kg. a) What is your initial kinetic energy right before you hit the breaks? b) What is the magnitude of the static friction force acting on the car? c) Does the friction do positive or negative work on the car? Explain your reasoning. d) Use...
An old car is traveling down a long, straight, dry road at 25.0 m/s when the driver slams on the brakes, locking the wheels. The car comes to a complete stop after sliding 235 m in a straight line. If the car has a mass of 755 kg, what is the coefficient of kinetic friction between the tires and the road?