Answered: Without turning around, a dog walks…

Without turning around, a dog walks along a long straight path for 4.0 m at 3.0 m/s and then for 2.0 s at 6.0 m/s. What was the average speed of the dog?

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 starts from rest and reaches a velocity of 40 m/s in 10 s, what will its velocity be 5 s…

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: A bullet is fired straight up in the air at an initial speed of 245 m/s. After how much time is the…

Q: A motorist drives north for 48.0 minutes at 75.0 km/h and then stops for 20.0 minutes. He then…

Q: What is the final velocity of a freight train that accelerates at a rate of 0.0852 m/s for 8.25 min,…

Q: A toy car initially at 4m/s and after 30 s its velocity reaches to 10 m/s . Determine the…

A: Given data: - The initial velocity of the toy car is u = 4 m/s. The final velocity of the toy car…

Q: A bullet in a gun is accelerated from the firing chamber to the end of the barrel at an average rate…

Q: car is traveling along a straight road at a velocity of +27.4 m/s when its engine cuts out. For the…

Q: A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 the market…

A: Given value--- first speed = 5 km/h . second speed = 7.5 km/h . distance = 2.5 km. time interval =…

Q: A ball is pushed downhill with an initial velocity of 9.8 m/s. The ball rolls down a hill with a…

Q: A speed boat starts from rest and accelerates at a rate of 3.1m/s?. The time required to reach a…

A: Given: The initial velocity of the boat = 0 Acceleration of the boat = 3.1 m/s2 Final speed of the…

Q: Draw a motion diagram for a car that starts from rest and ac- celerates at 4.0 m/s for 10 s. • A car…

A: It is asked to draw the Motion diagrams Question 23. Given: acceleration of the car, a = 4.0 m/s…

Q: A ball is launched straight upwards starting at a height of 0.47 ×× 0.06 m. If the ball reaches a…

Q: A ball is thrown straight up with a velocity of 20 m/s. At the top of its path its acceleration is:…

A: When a ball is thrown up with an initial velocity of 20m/s, the velocity of the ball decreases as…

Q: A car starts from rest with a constant acceleration of 5 m/sec^2. The speed of the car at the end of…

A: Given: Initial velocity u = 0 Acceleration a = 5 ms2 Time t = 5 seconds. To determine: Speed v at…

Q: A truck covers 80 m in 16 s while uniformly slowing down to come to rest. What is the initial…

Q: How far does a car travel in 3.0 s if its initial velocity is 6.0 m/s and its acceleration is 2.0…

Q: A snowmobile with an initial speed of 5.6 m/s travels 24.0 m in 2.0 s. What final speed does it…

A: Given data: Initial velocity (V0) = 5.6 m/s Distance traveled (x) = 24.0 m Time (t) = 2.0 s…

Q: To pass a physical fitness test, Massimo must run 1000 m at an average rate of 4.00 m/s. He runs the…

A: Given information : Average speed = 4 m/s Distance = 1000m Time required to cover 1000 m at average…

Q: A ball is thrown upward and passes a powerline that is 15 ft off the ground at times 0.5 s on the…

A: Given: The height of the ball thrown upwards=15ft=4.5m time on the way up t1=0.5s time on the way…

Q: A motorist drives 100 km from one city to another in 2.80 h but makes the return trip in only 2.00…

A: The average speed of the total trip can be expressed as,

Q: A student walks 2 km in 30 minutes. What is the student's average speed in km/hr?

A: Given data: Distance (d) = 2 km Time (t) = 30 minutes Required: Average speed in km/hr

Q: A ball is thrown straight up with a speed of 20 m/s. How long does it take to return to its starting…

Q: A tennis ball is tossed vertically upwards and travels a distance of 6.5 m in 1.2 seconds. What was…

A: Given Distance = D = 6.5 m Time = T= 1.2 sec U =????? a =-g = -9.8 m/s²

Q: When it takes a car 8.9 s to increase its speed from 4.5 m/s to 25.4 m/s, what is the magnitude of…

Q: A slow jogger runs å milè 16 minutes Calculate the speed (a) in/s in/s (b) m/min m/min (c) km/h

A: Here, we calculate the given as follow;

Q: A downhill skier reaches the steepest part of a trail. If her speed at the bottom of the hill is 18…

A: Kinematic equations of motion are- 1) v=u+at2) s=ut+12at23) v2=u2+2as where,u is initial velocityv…

Q: A ball starts with an initial speed of 4.00 m/s and rolls down an incline with an acceleration of…

A: initial speed = 4 m/sacceleration = 2 m/s2 final speed = 8 m/slength of incline ??

Q: A speedboat moves west at 108 km/h for 26.0 min. It then moves at 60.0° south of west at 90.0 km/h…

A: Given data: Speed (V1) = 108 km/h for t1 = 26.0 min Speed (V2) = 90.0 km/h for t2 = 10.0 min…

Q: (the complete question is in the picture) Which of the following best describes an instantaneous…

A: Instantaneous speed can be defined as the rate of change of distance. Mathematically given by:…

Q: "If it takes 50 m to stop a car initially moving at 25 m/s, what distance is required to stop a car…

Q: A car moving with an initial velocity of 25 m/s north has a constant acceleration of 3 m/s² south.…

Q: A bicycle travels 3.2 in due east in 0.10 h, then 4.8 km at 15.0 degree east of north in 0.15 h,…

A: x componentax=3.2+4.8 sin 15°+32=7.64 kmy componentay=0+4.8 cos 15°+0=4.636 kmMagnitude of net…

Q: A deer is running along the horizontal direction with a constant velocity of 19.1 m/s. The moment…

A: Solution: given that speed of dear = 19.1 m/s speed of tiger = 4.8 m/s t = 13.9 s to find the…

Q: Two cars leave from the same position at the same time. One travels due North at 30 mph, while the…

A: Speed of Car A due north is Va = 30 mph Speed of car B due east is Vb = 40 mph

Q: A ball is thrown straight up with an initial speed of 12 m/s. How high it can go?

A: Given value - For calculating maximum height, we will use following equation -

Q: As you ride a bicycle on the sidewalk with a speed of 5.01 m/s, a ball suddenly rolls out in front…

Q: An automobile driver increases the speed at a constant rate from 25 km/h to 55 km/h in 0.50 min. A…

A: Given: (a) u = 25 km/h = 6.95 m/s v = 55 km/h = 15.23 m/s t = 0.50 min = 30 s (b) u = 0 m/s v =…

Q: A ball at rest is dropped from a height of 32 meters. How long will it take for the ball to reach…

A: From the kinematic equations: Since the ball is dropped from rest from a height of h, so the…

Q: A semi truck is accelerating (speeding up) at 5.30 m/s^2 up a incline (a hill). At a particular…

A: Given accelerating of semi truck = 5.30 m/s2 speed of semi truck = 12.9m/s We have to calculate a.…

Q: You toss a stone straight up and it comes back down in a total time of 6 s, what is the speed of the…

A: Time of flight, T = 6 s Acceleration due to gravity, g = 9.81 m/s2 The time of flight for…

Q: A ball is pushed downhill with an initial velocity of 3 m/s. The ball rolls down a hill with a…

Q: If a flea can jump straight up to a height of 0.44 m, what is its initial speed as it leaves the…

A: Given that:- Maximum height attained by a flea=0.44m

Q: The average acceleration of a moving car is 1.25 m/s?. If the object starts in 2.5 m initial…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A vessel undergoes an average acceleration of 1.80m/s². What is the speed of the vessel after 85.6s?…

Q: What average speed, most nearly, is required to run a mile (1.6 km), in 4 minutes? a. 5.0 m/s b.…

A: Distance to be travelled is S = 1.6 km => S = 1.6 × 1000 = 1600 m Time required = 4 min => t…

Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

100%

Without turning around, a dog walks along a long straight path for 4.0 m at 3.0 m/s and then for
2.0 s at 6.0 m/s. What was the average speed of the dog?

Expert Solution

Step 1

Given data:

Case 1:

Speed (v₁) = 3 m/s

Distance (d₁) = 4.0 m

Case 2:

Speed (v₂) = 6 m/s

Time(t₂)= 2 sec

Need to determine the average speed.

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

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

In a classic clip on Americas Funniest Home Videos, a sleeping cat rolls gently off the top of a warm TV set. Ignoring air resistance, calculate the position and velocity of the cat after (a) 0.100 s, (b) 0.200 s, and (c) 0.300 s.
A pebble is dropped from rest from the top of a tall cliff and falls 4.9 m after 1.0 s has elapsed. How much farther does it drop in the next 2.0 s? (a) 9.8 m (b) 19.6 m (c) 39 m (d) 44 m (e) none of the above
A football quarterback runs 15.0 m straight down the playing field in 2.50 s. He is then hit and pushed 3.00 m straight backward in 1.75 s. He breaks the tackle and runs straight forward another 21.0 m in 5.20 s. Calculate his average velocity (a) for each of the three intervals and (b) for the entire motion.
The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of 5.60 m/s2 for 4.20 s. making skid marks 62.4 m long that end at the tree. With what speed does the truck then strike the tree?
The Shanghai maglev train connects Longyang Road to Pudong International Airport, a distance of 30 km. The journey takes 8 minutes on average. What is the maglev train’s average velocity?
a man walks south at a speed of 2.00m / s for 15.0 minutes. then he turns and walks north at a distance of 2000m in 15.00 minutes. What is the average speed of the man during his entire movement?
A car enters a freeway with the speed of 6.5 m/s and accelerates to a speed of 24 m/s in 30 s. How far does the car travel while it’s accelerating?
A car traveling at 7.0 m/s accelerates at the rate of 0.80 m/s? for 2.0 s. What is the final velocity of the car?
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 go-cart on a race track travels from a 11.05 m marker to a 91.8 m marker in 4.59 s. Determine the average velocity of the go-cart over the 4.59 s.
One train is traveling 120 m with a velocity of 52 km/h and a second train is traveling in the opposite direction with a velocity of 20 km/h. How long will it take for them to completely pass one another?
A race car completes a lap on a 1600 m long track with an average speed of 250 km/h. If the car's average speed on the first half of the track was 230 km/h, what was its average speed (in km/h) on the second half?