Question

Bob is driving his car at 20 m/s down a hill with a slope of 5...

Bob is driving his car at 20 m/s down a hill with a slope of 5 degrees. When a deer suddenly jumps out of the woods onto the road, he slams on the brakes, and the car skids to a stop. The mass of the car is 1500 kg, and the coefficient of kinetic friction between the tires and the road is µk = 0.816.

a) (3 points) Draw a free-body diagram for the car.
b) (3 points) Determine the friction force that the road applies to the tires.
c) (6 points) Calculate the distance that the car skids before coming to a stop.
d) (3 points) Calculate the work that is done by friction.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
three 1500 kg cars are driving at 25m/s along the road. Car A is on a...
three 1500 kg cars are driving at 25m/s along the road. Car A is on a flat portion of the road, car B is at the bottom of a hill and car C is at the top of a hill. (a)Determine the normal force that the road exerts on each car. Suppose each car suddenly brakes hard and starts to skid. (b) Determine the magnitude and direction of each car's acceleration. The coefficient of kinetic friction between the tires and...
A 1000 kg car is driving at a speed of 35 m/s on flat level ground....
A 1000 kg car is driving at a speed of 35 m/s on flat level ground. A road hazard ahead causes the driver to slam on the brakes, and the tires start to skid. a) If the pavement is dry (and thus μk = 0.7) how far will they travel before coming to a stop? b) If the pavement is wet, μk is reduced to 0.3. Now how far would they travel before coming to a stop?
A car, 1110 kg, is traveling down a horizontal road at 20.0 m/s when it locks...
A car, 1110 kg, is traveling down a horizontal road at 20.0 m/s when it locks up its brakes. The coefficient of friction between the tires and road is 0.901. How much distance will it take to bring the car to a stop? ​
Traveling at 40.2 m/s, a driver applies the brakes to his fast-moving car and skids out...
Traveling at 40.2 m/s, a driver applies the brakes to his fast-moving car and skids out of control on a wet concrete horizontal road. The 2000 kg car is headed directly toward a student waiting to catch a bus to campus who is standing 58.0 m down the road. Luckily, Superman is flying overhead and surveys the situation. Knowing that the coefficient of kinetic friction between rubber and rough wet concrete is .800, he determines that friction alone will not...
You're driving down the highway late one night at 20m/s when a deer steps onto the...
You're driving down the highway late one night at 20m/s when a deer steps onto the road 47 m in front of you. Your reaction time before stepping on the brakes is 0.50s, and the maximum deceleration of your car is 10m/s2. A) Part complete How much distance is between you and the deer when you come to a stop? Express your answer to two significant figures and include the appropriate units. B)What is the maximum speed you could have...
You are driving down IL-53 at 45 miles per hour in your 1325 kg car. As...
You are driving down IL-53 at 45 miles per hour in your 1325 kg car. As you look down to check a text, a car 75 m in front of you stops. It takes you 2.0 s to look at the text, realize there’s a stopped car in front of you, and hit the brakes. Your car skids along the concrete (µk=0.8 between rubber and dry concrete) and slows. (a) How far does your car travel in those 2.0 s...
You are driving your car uphill along a straight road. Suddenly, see a car cross a...
You are driving your car uphill along a straight road. Suddenly, see a car cross a red light and enter the intersection, just ahead of you. Immediately apply your brakes and skid in a straight line to stop, leaving a mark of 100 ft long by sliding. A policeman observes the whole incident, gives a ticket to the driver of the car for passing a red light. It also gives a ticket to you for exceeding the 30 mph speed...
You are driving your car uphill along a straight road. Suddenly, see a car cross a...
You are driving your car uphill along a straight road. Suddenly, see a car cross a red light and enter the intersection, just ahead of you. Immediately apply your brakes and skid in a straight line to stop, leaving a mark of 100 ft long by sliding. A policeman observes the whole incident, gives a ticket to the driver of the car for passing a red light. It also gives a ticket to you for exceeding the 30 mph speed...
A 2300 kg car moving at an initial speed of 25 m/s along a horizontal road...
A 2300 kg car moving at an initial speed of 25 m/s along a horizontal road skids to a stop in 50 m. (Note: When stopping without skidding and using conventional brakes, 100 percent of the kinetic energy is dissipated by friction within the brakes. With regenerative braking, such as that used in hybrid vehicles, only 70 percent of the kinetic energy is dissipated.) (a) Find the energy dissipated by friction. 718750 Incorrect: Your answer is incorrect. kJ (b) Find...
A car with snow tyres (m=1500 kg) is sliding down an icy hill with a slope...
A car with snow tyres (m=1500 kg) is sliding down an icy hill with a slope of 15º at an initial speed of 8 m/s.) The coefficient of kinetic friction is 0.4. a. What is the stopping distance b.After sliding 12 m what is the momentum of the car? c. At this point of having travelled 12m the car collides into another car (m=1000 kg) travelling 3 m/s in the same direction down the slope and they are stuck together....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT