A car is travelling at 20m/s on a horizontal road. The brakes suddenly are applied 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?
Homework Answers
Add Answer to:
A car is travelling at 20m/s on a horizontal road. The brakes
suddenly are applied and...
A car is traveling up a road inclined at an angle Theta above the horizontal. The...
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...
Please help!!! 12. A bureau rests on a rough horizontal surface (mus = 0.50, muk =...
Please help!!!
12. A bureau rests on a rough horizontal surface (mus = 0.50, muk = 0.40). A constant horizontal force, just sufficient to start the bureau in motion, is then applied. The acceleration of the bureau is: A. 0 B. 0.98 m/s^2 C. 3.3 m/s^2 D. 4.5 m/s^2 E. 8.9 m/s^2 ans: B 13. A car is travelling at 15 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4.0 s....
A car driving 20m/s sees a deer in the road and brakes, slowing the car at...
A car driving 20m/s sees a deer in the road and brakes, slowing the car at a rate of -12 m/s^2. How long does it take the car to stop? If the deer is 10 meters from the car when it brakes, does the car hit it? Would the deer survive if the acceleration rate had been -15 m/s^2?
2. A 2500 kg car is driving at 65.0 km/h on a horizontal level road. As...
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...
An automobile is travelling at 45 m/s on a horizontal road. If the coefficient of static...
An automobile is travelling at 45 m/s on a horizontal road. If the coefficient of static friction between the tires and the road is 0.12, find the minimum stopping distance of the car.
1) ) A car is travelling at 37. m/ s. The driver hits their brakes and...
1) ) A car is travelling at 37. m/ s. The driver hits their brakes and decelerates at 4.5 m/ s^2. How much distance does the car need to stop? 2) Suppose a child pulls a wagon horizontally. The child exerts a force of 51. N and there is frictional force of 18 N acting on the wagon, which opposes the motion. The mass of the wagon is 17.6 kg. (a) Draw a free body diagram for the wagon. (b)...
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...
3. An engine exerts a force of 10000 N on a 1000 kg car travelling over...
3. An engine exerts a force of 10000 N on a 1000 kg car travelling over a flat road. The force (overcoming friction) accelerates the car from rest such that it travels a distance of 50 m in 5 s Find e. the net acceleration of the car, f. normal force exerted by the road on the car, and g. the coefficient of kinetic friction between the car and the road? 4. A 10 kg block is initially at rest...
A car is traveling down a hill that makes an angle of 25° with the horizontal....
A car is traveling down a hill that makes an angle of 25° 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 uk = 0.63. (a) Find the acceleration of the car. Take down the ramp to be the positive direction. Submit Answer Tries 0/5 (b) How long does the car take to skid to a stop if...
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...
Please help!!!
12. A bureau rests on a rough horizontal surface (mus = 0.50, muk = 0.40). A constant horizontal force, just sufficient to start the bureau in motion, is then applied. The acceleration of the bureau is: A. 0 B. 0.98 m/s^2 C. 3.3 m/s^2 D. 4.5 m/s^2 E. 8.9 m/s^2 ans: B 13. A car is travelling at 15 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4.0 s....
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...
An automobile is travelling at 45 m/s on a horizontal road. If the coefficient of static friction between the tires and the road is 0.12, find the minimum stopping distance of the car.
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...
3. An engine exerts a force of 10000 N on a 1000 kg car travelling over a flat road. The force (overcoming friction) accelerates the car from rest such that it travels a distance of 50 m in 5 s Find e. the net acceleration of the car, f. normal force exerted by the road on the car, and g. the coefficient of kinetic friction between the car and the road? 4. A 10 kg block is initially at rest...
A car is traveling down a hill that makes an angle of 25° 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 uk = 0.63. (a) Find the acceleration of the car. Take down the ramp to be the positive direction. Submit Answer Tries 0/5 (b) How long does the car take to skid to a stop if...
Most questions answered within 3 hours.
-
Buses are powered by chemical reactions. Define matter and the
four states of matter. What is...
asked 15 minutes ago -
Use conservation of energy to find the velocity of a free point
charge q1 at 22cm...
asked 22 minutes ago -
First, describe policies promoted by governments of the
political right to address economic globalization. Second, describe...
asked 39 minutes ago -
M2-9 Completing T-Accounts LO2-4
Following are the transactions of Dennen, Inc., for the month of
January....
asked 39 minutes ago -
Write a program using python that reads from values from a text
file and plots them...
asked 40 minutes ago -
Look up the density of
the metal of the object used in parts A and B...
asked 40 minutes ago -
Discuss strategic considerations that Amazon and NYC politicians
had. Analyze why the deal between Amazon and...
asked 43 minutes ago -
A combustion reaction is describes as a carbon source reacting
with oxygen and producing carbon dioxide...
asked 58 minutes ago -
Buckminsterfullerence is a recently allotrope of carbon in which
carbon atoms form molecules of formula C_60,...
asked 1 hour ago -
Lower Equitorial and Upper Equitorial are the same except Lower
Equitorial has a larger capital stock....
asked 1 hour ago -
how do you think that pH of a jar where you have added a certain
amount...
asked 1 hour ago -
If the Federal Reserve increases the reserve requirement, what
will happen to the Money Supply in...
asked 1 hour ago