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22. Two cars are driving down a straight country road when the driver of the first...
The driver of a car of mass M which is moving along a straight road with...
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 driver is traveling at 30.0 m>s when he sees a moose crossing the road 80.0...
A driver is traveling at 30.0 m>s when he sees a moose crossing the road 80.0 m ahead. The moose becomes distracted and stops in the middle of the road. If the driver of the car slams on the brakes, what is the minimum constant acceleration he must undergo to stop short of the moose and avert an accident?
Lil Nas X is driving a Maserati down Old Town Road at -16.5 km/hr when he...
Lil Nas X is driving a Maserati down Old Town Road at -16.5 km/hr when he applies the brakes. He slows down to -11.1 km/hr in 2.4 seconds. What is his acceleration in km/hr/sec?
A car is traveling down a hill that makes an angle of 17° with the horizontal....
A car is traveling down a hill that makes an angle of 17° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is μK = 0.53. (a) Find the acceleration of the car. (Take down the ramp to be the positive direction) (b) How long does the car take to skid to a stop if its initial speed is...
5. The driver of a car travelling 75.0 km/hr suddenly sees road construction up ahead. She...
5. The driver of a car travelling 75.0 km/hr suddenly sees road construction up ahead. She takes 2.30 s to begin applying the brakes. The car slows down at a constant rate of 10.0 km/br's for until she comes to a stop. a. Draw a picture showing the various intervals of the car's motion and accelerations, b. Calculate the average acceleration of the car after the driver applies the brake c. What is the total distance the car travelled from...
An automobile is traveling along a straight road heading to the southeast at 24 m/s when...
An automobile is traveling along a straight road heading to the southeast at 24 m/s when the driver sees a deer begin to cross the road ahead of her. She steps on the brake and brings the car to a complete stop in an elapsed time of 8.0 s. A data recording device, triggered by the sudden braking action, records the following velocities and times as the car slows. Let the positive x-axis be directed to the southeast. Plot a...
11.78 A car is traveling at a constant speed of 54 km/h when its driver sees...
11.78 A car is traveling at a constant speed of 54 km/h when its driver sees a child run into the road. The driver applies her brakes until the child returns to the sidewalk and then accelerates to resume her original speed of 54 km/h; the acceleration record of the car is shown in the figure. Assuming x = 0) when t = 0, determine (a) the time t, at which the velocity is again 54 km/h, (b) the position...
Two cars are traveling along a straight line in the same direction, the lead car at...
Two cars are traveling along a straight line in the same direction, the lead car at 25.7m/s and the other car at 29.2m/s. At the moment the cars are 39.7m apart, the lead driver applies the brakes, causing her car to have an acceleration of -1.99m/s2. How long does it take for the lead car to stop? What is the distance it travels during this time? Assuming that the chasing car brakes at the same time as the lead car,...
Two cars are traveling along a straight-line in the same direction, the lead car at 25.0...
Two cars are traveling along a straight-line in the same direction, the lead car at 25.0 m/s and the other car at 36.0 m/s. At the moment the cars are 40.0 m apart, the lead driver applies the brakes, causing his car to have an acceleration of -1.80 m/s2. (a) How long does it take for the lead car to stop? (b) Assuming that the chasing car brakes at the same time as the lead car, what must be the...
TWO cars are traveling along a straight line In the same direction, the lead car at...
TWO cars are traveling along a straight line In the same direction, the lead car at 24.1 m/s and the other car at 29.0m/s. At the moment the cars are 41.1m apart, the lead driver applies the brakes, causing her car to have an acceleration of -2.09m/s^2. How long does it take for the lead car to stop? What is the distance it travels during this time? Assuming that the chasing car brakes at the same time as the lead...
5. The driver of a car travelling 75.0 km/hr suddenly sees road construction up ahead. She takes 2.30 s to begin applying the brakes. The car slows down at a constant rate of 10.0 km/br's for until she comes to a stop. a. Draw a picture showing the various intervals of the car's motion and accelerations, b. Calculate the average acceleration of the car after the driver applies the brake c. What is the total distance the car travelled from...
An automobile is traveling along a straight road heading to the southeast at 24 m/s when the driver sees a deer begin to cross the road ahead of her. She steps on the brake and brings the car to a complete stop in an elapsed time of 8.0 s. A data recording device, triggered by the sudden braking action, records the following velocities and times as the car slows. Let the positive x-axis be directed to the southeast. Plot a...
11.78 A car is traveling at a constant speed of 54 km/h when its driver sees a child run into the road. The driver applies her brakes until the child returns to the sidewalk and then accelerates to resume her original speed of 54 km/h; the acceleration record of the car is shown in the figure. Assuming x = 0) when t = 0, determine (a) the time t, at which the velocity is again 54 km/h, (b) the position...
TWO cars are traveling along a straight line In the same direction, the lead car at 24.1 m/s and the other car at 29.0m/s. At the moment the cars are 41.1m apart, the lead driver applies the brakes, causing her car to have an acceleration of -2.09m/s^2. How long does it take for the lead car to stop? What is the distance it travels during this time? Assuming that the chasing car brakes at the same time as the lead...
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