A motorist saw a humps 33 m away at a speed of 14.5 m/s. He immediately slams on the brake and decelerates 1.2 m/s 2 with a speed of 11.7 m/s. (a) Will he stop before the humps (express your answer in magnitude)? (b) How long it will take before stopping?

A motorist saw a humps 33 m away at a speed of 14.5 m/s. He immediately slams on the brake and decelerates 1.2 m/s 2 with a speed of 11.7 m/s. (a) Will he stop before the humps (express your answer in magnitude)? (b) How long it will take before stopping?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 23P: The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows...

See similar textbooks

Related questions

Q: A car is travelling at a constant speed of 100 km.hr at the highway when the driver noticed that the…

A: Given: Speed u=100 km/hr=100×518=27.78 m/s Distance S=10 m

Q: should be used, 1. Starting from rest, a red truck reached a velocity of 25m/s in 30 seconds. How…

Q: |A golfer rides in a golf cart at an average speed of 3.10 m/s for 28.0 s. She then gets out of the…

A: The average velocity of the golfer in the cart vc =3.1 m/s Distance travelled with vc in tc=28s is…

Q: You are walking down a straight path in a park and notice there is another person walking some…

Q: In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long…

A: Given data:

Q: A parachutist bails out of a plane and falls freely a distånce of 40 meters. Then, the parachute…

A: The time to fall freely t1=2hg=240 m9.81 ms2=2.86 s The speed when he opens the parachute is v=2gh…

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.87 meters above…

Q: Driving down the road at a speed of 26.6 m/s, you suddenly notice a fallen tree blocking the road a…

Q: Question 1 (1 point) V Saved What is the stopping distance of a Toyota Celica from 86 km/h where the…

Q: A man walks on sand at speed 1.20 m/s over a distance of 48.0 m, after which he walks on pavement…

A: Given :- speed on sand = 1.20 m/s distance = 48 m walk on pavement = 102 m average speed of entire…

Q: A woman starts from her home at 9.00 am, walks with a speed of 5 km h–1 on the straight road up to…

A: Given : Speed of the lady= 5 km/h Distance from her home and to her office = 2.5 km Time taken =…

Q: A rock is tossed straight up with a speed of 26m/s. When it returns, it falls into a hole 13 m Cep.

Q: An object is thrown from a level field with initial upward speed 17 m/s and forward speed 9.9 m/s.…

Q: You are on the roof of a Physics Building, 17 m above the ground. Your physics professor, who is…

A: Answer:- Given Time taken by egg to free fall = t Distance required to fall(S) =(17 m) - (1.95 m)…

Q: A person standing at the edge of a cliff throws a rock upward from a height of 350ft above ground…

A: A person standing at the edge of a cliff throws a rock upward from a height of 350ft above ground…

Q: How much time, at most, does the man have to get out of the way?

Q: Question 6 3 pts At t = 0, a car is going 9 ft/s and is 259 ft from the start of the road. The…

Q: is on a street that has a posted speed limit of vm=75 km/hr and is traveling above the speed limit…

A: GivenSpeed limit, vm=75 km/hSpeed of driver above speed limit, vc=28 km/hDistance between driver and…

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.072 meters above…

A: Given that , initial velocity =u=0Formula to be used ⇒ S= ut+12at2 - iNow , draw a reference…

Q: A California Condor is approaching its nest with a large chunk of carrion in its beak. As it…

Q: A bear spies some honey and takes off from rest, accelerating at a rate of 2.00 m/s^2. If the honey…

A: Given data: Initial velocity (Vi) = 0 m/s Acceleration (a) = 2.00 m/s2 Distance (d) = 9.9 m…

Q: Question 2 A Dodge Colt traveling at 95 km/h can stop in 49.04 m. Given that the actual stopping…

A: initial speed of dodge colt (v) = 95 kmhrdeacceleration = 7.1 ms2actual stopping distance = 55 m

Q: You are driving down the highway late one night at 20 m/s when a deer steps onto the road 35 m in…

Q: . A car that travels at 8.9 km/hr for 2.0 hrs, at 3.6 km/hr for 1.0 hr and at 2 km/hr for half an…

Q: a car can accelerate at a rate of 4m/s^2 and can brake at a rate of -6m/s^2. if the distance between…

A: a1 = 4 m/s2a2 = - 6 m/s2distance = 120 m speed limit (v) = 24 m/s

Q: A boy jumps from rest, straight down from the top of a cliff. He falls halfway down to the water…

A: According to question we need to find that How much time passes during his entire trip from the top…

Q: he driver of a car that is travelling at 10 m/s slams the breaks and comes to a complete stop in…

A: Let the initial speed of the car is denoted by u and the final speed is denoted by v. The…

Q: A driver in a car is initially traveling at +35.0 m/s when the driver sees a log up ahead on the…

A: Given Initial velocity (U) = 35.0 m/s Final velocity (V) = 0 Retardation (a) = -7.00 m/s2

Q: If an arrow is shot upward on Mars with a speed of 66 m/s, its height in meters t seconds later is…

A: The most common formula for average speed is distance traveled divided by time taken Average speed…

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.87 meters above…

A: Height of top of meter stick above the ground = 2.87 m Length of meter stick = 1 m time taken by…

Q: A driver traveling at night on a country road suddenly sees another car pull out into the roadway in…

A: Given that, Distance of skidding, ΔS = 72.9 m Acceleration, a = 4.8 m/s2 Time, t = 4.5 sec

Q: The car directly ahead of him is also traveling at 70 mi/hr. Vladimir is keeping what he feels is a…

Q: A train normally travels with a uniform speed of 72 km / h on a long stretch of flat, straight…

A: The train stopped at the station for 2min and its deceleration is 1m/s2 so the final velocity of…

Q: a stone is dropped at rest from a height of 90 m, how many seconds does it take for the stone to hit…

A: Height (h) = 90 m Initial velocity (u) = 0 {Rest}

Q: Week 4 Fall 2019 Problem 2.51 9 of 13 Review Constants The minimum stopping distance for a car…

A: the stopping distance ( the distance minus from the reaction time distance) is

Q: A cheetah can run at approximately 5.1 ×101×101 km/h and a gazelle is slower by 3.53.5 km/h. If both…

A: Given cheetah speed = 5.1 ×101×101 km/h gazelle is slower by 3.5 km/h both animals are running at…

Q: QUESTION 15 A car has a speed of 27 m/s when it uniformly slows down to a speed of 9.0 m/s in 6.0 s…

Q: On a 10 mile drive, a man exceeds the 50 mi/hr speed limit by an average of 10 mi/hr. How much time…

Q: 1. Find the time it takes to travel 30 km for a bus which accelerates uniformly from 40 km/hr to 80…

A: since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…

Q: A ball is thrown straight up with initial speed 15.0 m/s and rises 11.5 m above the release point…

A: The initial velocity required to reach 23.0 m is, u=2gh

Q: You are on the roof of a Physics Building, 35 m above the ground. Your physics professor, who is…

A: Given data: - The height of the physics building is Y = 35 m. The height of the professor is y =…

Q: In 1865 Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long…

Q: In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long…

Question

2. A motorist saw a humps 33 m away at a speed of 14.5 m/s. He immediately slams on the brake and decelerates 1.2 m/s 2 with a speed of 11.7 m/s. (a) Will he stop before the humps (express your answer in magnitude)? (b) How long it will take before stopping?

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?
A car is traveling at 90 km/h when the driver sees an accident 75 m ahead and slams on the brakes. What minimum constant deceleration (in m/s2) is required to stop the car in time to avoid a multi-car pileup? (Round your answer to two decimal places.)
A driver traveling at night on a country road suddenly sees another car pull out into the roadway in front of him.He slams on his brakes and skids for a distance of 72.9 m until he hits the other car. If the driver slowed with constant acceleration of 4.8m/s² for 4.5 s,with what speed would he hit the other car?
A runner is moving with a speed of 2.68[m/s]. How long will it take the runner to complete a 5.0[km] race? Express your answer in seconds. Ignore the time it takes to reach this speed, and assume the runner is always at this speed.
A deer is running east to west on a straight line. It runs (a) at a constant speed of 2.5 m/s for the first 24 sec, (b) at a reduced speed (also constant) of 0.6 m/s for the next 15 sec, (c) sprints at a constant speed of 3.1 m/s for the next 1 minute and 40 seconds. Compute the total distance covered and the average speed in mph.
A parachutist jumps out of an airplane and accelerates with gravity to a maximum velocity of 58.8 m/s in 6 seconds. She then pulls the parachute cord and after a 4 second deceleration, descends at 10 m/s for 60 seconds. reaching the ground. From what height did the parachutist jump?
A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other, taking 2.50 s.Then security agents appear, and the man runs as fast as he can back along the sidewalk to his starting point, taking 10.0 s.What is the ratio of the man’s running speed to the sidewalk’s speed?
The first supersonic flight was performed by Charles Yeager in 1947. During his attempt, he flew from 119 m/s to top speed, accelerating at 7.29 m/s^2 for a distance of 5251 m. What top speed did he achieve?
A car is travelling at a constant speed of 100 km.hr at the highway when the driver noticed that the bridge 10 m away is cut off. If the driver immediately applied the brakes upon noticing the cut off bridge, what must be his deceleration so he would not fall to the river?
A cheetah can run at approximately 5.1 ×101×101 km/h and a gazelle is slower by 3.53.5 km/h. If both animals are running at full speed, with the gazelle 7.3×101×101 m ahead, how long before the cheetah catches its prey? answer in seconds.
A car is travelling at a constant speed of 100 km.hr at NLEX when the driver noticed that the bridge 10 m away is cut off. If the driver immediately applied the brakes upon noticing the cut off bridge, what must be his deceleration so he would not fall to the river?
2. A car that travels at 8.9 km/hr for 2.0 hrs, at 3.6 km/hr for 1.0 hr and at 2 km/hr for half an hour. What is its average speed?