2. As you drive your car along a country road at night, a deer jumps out of the woods and stands in the middle of the road ahead of you. This occurs just as you are passing from a 55 mi/h zone to a 50 mi/h zone. At the 50 mi/h speed-limit sign, you slam on the car's brakes, causing them to lock up, and skid to a stop inches from the startled deer. As you breathe a sigh of relief, you hear the sound ofa police siren. The policeman proceeds to write you a ticket for driving 56 mi/h in 50 mi/h zone. Because of your preparation in physics, you are able to use the 25 m long skid marks that your car left behind as evidence that you were not speeding. The coefficient of kinetic friction between automobile tires and dry concrete is 0.80. How fast were you going before you slammed on the brakes? (44 mi/h)

2. As you drive your car along a country road at night, a deer jumps out of the woods and stands in the middle of the road ahead of you. This occurs just as you are passing from a 55 mi/h zone to a 50 mi/h zone. At the 50 mi/h speed-limit sign, you slam on the car's brakes, causing them to lock up, and skid to a stop inches from the startled deer. As you breathe a sigh of relief, you hear the sound ofa police siren. The policeman proceeds to write you a ticket for driving 56 mi/h in 50 mi/h zone. Because of your preparation in physics, you are able to use the 25 m long skid marks that your car left behind as evidence that you were not speeding. The coefficient of kinetic friction between automobile tires and dry concrete is 0.80. How fast were you going before you slammed on the brakes? (44 mi/h)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: Q12. A ball was thrown vertically upward, and it stopped after reaching a maximum height of 4.5…

A: As per bartelby guidelines I have solve first question if you want the answer of other post it…

Q: 1. What was the initial speed of a ball thrown upwards (close to the surface of the earth) if it…

A: The kinematic equation of motion is given by Where v = Final speed, u = Initial speed, =…

Q: To Merge into the highway you need to increase your speed from 50 km/h to 100 km/h. If your car can…

A: Write the given values with the suitable variables. u=50 km/h=50×10003600 m/s=13.89 m/sv=100…

Q: Driving to Red Hook at night at 65 miles/hour, a Bard student sees a deer in the road 50 meters…

A: given initial speed u=65 mi/h = 0.447 * 65 =29.055 m/s acceleration a =-8 m/s distance between bear…

Q: 9. Some insurance companies are suggesting that a driver's premiums could be lowered if they were…

A: in this question we discuss record data and analysis of EDR.

Q: A bird is flying at 4 m/s that encounters a breeze blowing at 4 m/s in the same direction, what is…

A: Given that, Speed of bird : VB= 4 m/s, Velocity of blowing wind vw = 4 m/s

Q: 7. You are driving along a straight section of road at 13 m/s when 10 m in front of you a furry…

Q: If you toss a ball upward with an initial speed v = 2m/s, it reaches a max height h without air…

A: Given data: Original initial velocity (v) = 2 m/s, vertically upward Maximum height = h New…

Q: A woodpecker's brain is specially protected from large decelerations by tendon-like attachments…

Q: 10. The position of a 25 kg robot that is moving along a straight track in the direction is given by…

A: As the bartleby guidelines we can solve only first question among multiple questions.

Q: The brakes of a car whose initial velocity is 30 m/s are applied, and the car receives an…

A: (Note: The questions here given as 1. and 2. are same. So, here I am taking it as a single question…

Q: 6) Suppose water is dripping from a gutter at the top of a three story tall building. The drips of…

A: The drips of water leak out at a steady rate of 4 drips per second. the drops of water fall under…

Q: A spaceship ferrying workers to Moon Base I takes a straight-line path from the earth to the moon, a…

A: Given distance travelled by spaceship is d=384000km=3.84x108m Magnitude of acceleration and…

Q: 1. Driving down the highway, you find yourself behind a heavily loaded tomato truck. You follow…

A: The solution for this question has been given below...

Q: A race-car driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The…

A: Given values: Initial velocity, vinitial= 10 m/s Final speed, vfinal= 30 m/s Duration, ∆t=4 s

Q: A car is driving along a circular track of diameter d = 0.75 km at a constant speed of v = 22 m/s.…

Q: 5. Below is the a-t-graph of a motorbike starting from rest during the first 0...10 seconds. What is…

Concept explainers

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

Question

2. As you drive your car along a country road at night, a deer jumps out of the woods and stands in the
middle of the road ahead of you. This occurs just as you are passing from a 55 mi/h zone to a 50 mi/h
zone. At the 50 mi/h speed-limit sign, you slam on the car's brakes, causing them to lock up, and skid
to a stop inches from the startled deer. As you breathe a sigh of relief, you hear the sound of a police
siren. The policeman proceeds to write you a ticket for driving 56 mi/h in 50 mi/h zone. Because of
your preparation in physics, you are able to use the 25 m long skid marks that your car left behind as
evidence that you were not speeding. The coefficient of kinetic friction between automobile tires and
dry concrete is 0.80. How fast were you going before you slammed on the brakes? (44 mi/h

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

When you drop a ball, after 5 seconds it hits the ground. What is the speed when the moment it touches the ground? Assuming the g=10m/s^2 and ignoring the air resistance. a) 50 m/s b) 0 m/s c) 10 m/s d) 25 m/s
1. Consider a car that initially travels in the positive direction at a speed of 30 m/s. The car uniformly speeds up to 40 m/s in a time of 5 s. Find the following: a. The acceleration of the car. b. The distance traveled over the entire 5.0 seconds. C. The distance traveled during the 2 s interval where the clock goes from t = 2 s, to t= 4 s. (Assume the 5 s time interval begins with the time = 0s.)
Can someone please please help me?
How does traveling at higher speeds affect your CMV "s total stopping distance?
A car is traveling at a rate of 58 feet per second when the brakes are applied. The position function for the car is given by s= -7.25t2 + 58t, where s is measured in feet and t is measured in seconds. Use this function to complete the table showing the position, velocity, and acceleration for each given value of t. 3 t S ds dt d²s dt² 0 Need Help? 58 -14 5 What can you conclude?! It takes 2 Read It 0 ✓ ✔ 50 75 58 -29 1 ✓ Viewing Saved Work Revert to Last Response X X 87 58 -43 5 2 ✓ X X 110.25 58 -58 X seconds for the car to stop, at which time it has traveled 87 D X ]x | 58 X 120.5 ft. -725 4 x x
4. Determine the maximum constant speed at which the 2.2-Mg car can travel over the crest of the hill at A without leaving the surface of the road. Neglect the size of the car in the calculation. y -y = 20 (1 ¬0 000) 100 m
3
1. A car is travelling towards the start line and the timer starts timing when the car crosses the start line. When the car crosses the start line, it is travelling at 5 m.s1. The car maintains its speed for 3 seconds then speeds up to 8 m.s1 in 4 seconds. It maintains this speed for 1 second then brakes hard and comes to a rest in 3 seconds. 10 9. 8. 7 3 2 1 0. 0 1 2 3 4 7 8 9 10 11 Time (s) a) What is the instantaneous velocity of the car at t = 7 s? b) What is the displacement? c) What is the average velocity of the car for the journey? 5 4- Velocity (m/s)
3. A speeding car going 30 m/s passes a police car that is at rest. At the moment the speeder passes, the police car pulls out and accelerates 4 m/s/s. The speeder continues going 30 m/s. Which is ahead and by how much after 10 seconds? When does the police car catch the speeder?
2. How much material passes in the time interval [0,7/2] through the points (a) x = 0, (b) x = π/2, (c) x = -1/2? What does the sign of your answer (positive/negative) mean?