A railroad diesel engine weighs four times as much as a freight car. If the diesel engine coasts at 4.0 km/h into a freight car that is intitally at rest, find the speed of the coupled cars. Express you answer to two significant figures and include appropriate units.

A railroad diesel engine weighs four times as much as a freight car. If the diesel engine coasts at 4.0 km/h into a freight car that is intitally at rest, find the speed of the coupled cars. Express you answer to two significant figures and include appropriate units.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 42P: A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain...

See similar textbooks

Related questions

Q: A ball of mass m = 1kg hits the floor with Initlal speed v = 2m/s, and vertically bounces back. The…

A: Given data: Mass of ball is, m=1 kg. Initial speed is, u=2 m/s.

Q: In a Broadway performance, an 75.0-kg actor swings from a R = 4.00-m-long cable that is horizontal…

A: Mass of actor(m)= 75 Kg mass of Co-star(M)=55 kg R or Height(h) =4 m Objective- To find max. height…

Q: In a railroad yard a 35,000 kg boxcar moving at 6.6 m/s is stopped by a spring-loaded bumper mounted…

A: When the car stops completely then all of its kinetic energy is stored as potential energy in the…

Q: A car (m=1250kg) going 7.0 m/s strikes a resting car (m=900kg) the collide in an inelastic…

A: The expression for inelastic collision is m1v1+m2v2=m1+m2v Rearrange v=m1v1+m2v2m1+m2

Q: Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a…

Q: A 7100-kilogram train car runs at a constant 16.0 m/s on a flat, frictionless track. Initially at…

A: Given data: Mass of train car (m1) = 7100 kg Initial velocity of train car (V1) = 16.0 m/s Mass of…

Q: An object with mass m1 = 1kg moving to the right at a speed of 4m / s collides with a spring…

A: m1 = 1 kg ,m2 = 2 kg , v1 = 4 m/s , v2 = - 2 m/s , v1f = 3 m/s Force constant , k = 105 N /m To find…

Q: How much impulse stops a 5-kg carton sliding at 4m/s when it meets a rough surface?

A: Write the expression for impulse .

Q: Gayle runs at a speed of 4.00 m/s and dives on a sled, initiallyat rest on the top of a…

Q: How much kinetic energy is lost in the inelastic collisions? Where does it go? Is it still in the…

Q: Suppose object A (4kg) is moving hortizontally and hits the Object B(2 kg) slightly above the…

Q: For a closed system, when the kinetic energy of the object quadruples, its velocity triples…

Q: In a railroad yard a 35,000 kg boxcar moving at 9.4 m/s is stopped by a spring-loaded bumper mounted…

A: Write the given values with the suitable variables. m=35000 kgv=9.4 m/sk=2.8 MN/m=2.8×106 N/m Here,…

Q: Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's…

A: The formula for the final velocities of the balls undergo elastic collision are:

Q: In a dramatic rescue mission, Dr. Porter was up on a 15-meter-high cliffside where she saw a box of…

Q: Calculate the final speed (in m/s) of a 100 kg rugby player who is initially running at 7.75 m/s but…

Q: The mass of the toy truck in Fig. 9.8 is three times that of the car, and they are tied together…

A: To solve the given question we will use the conservation of momentum.

Q: On October 9, 1992, a 27-pound meteorite struck a carin Peekskill, NY, creating a dent about 22 cm…

Q: A 0.150kg glider slides on an ice pond with negligible friction with speed of 0.8 m/s. It has a…

A: A head-on collision is defined as the collision in which the two bodies are initially moving towards…

Q: A truck with a mass of 1780 kg and moving with a speed of 12.5 m/s rear-ends a 615 kg car stopped at…

A: Answer:- Given Mass of truck (M) = 1780 kg Speed of truck (u) = 12.5 m/s Mass of car (m) = 615…

Q: Gayle runs at a speed of 3.30 m/s and dives on a sled, initially at rest on the top of a…

Q: I am driving down the street at 11.2 mi/h and suddenly I see a squirrel. I slam on the brakes in…

Q: A 5.0-g bullet leaves the muzzle of a rifle with a speed of320 m/s. What force (assumed constant) is…

A: Given data:Mass of the bullet, m = 5 g = 5 x 10-3 kg.Initial velocity of the bullet, u = 0 m/sFinal…

Q: A stuntman dives off a 200 m tall pole into a bucket of water. His PE On top of the pole is 15000 J.…

A: From the law of conservation of energy, we know that, Total Kinetic Energy (KE) + Total Potential…

Q: Gayle runs at a speed of 4.35 m/s and dives on a sled, initially at rest on the top of a…

A: Given Data Mass of Gayle=mG=50 kgMass of Gayle's brother=mGB=30 kgMass of Sled=mS=5 kgInitial…

Q: I am driving down the street at 23.4 mi/h and suddenly I see a squirrel. I slam on the brakes in…

A: Given that: Speed of car, u = 23.4 mi/h = 23.4 X 1.60 = 37.44 km/h= 10.4 m/s Time of decleration, t…

Q: A boy hits a 0.05-kg golf ball from rest, giving it a speed of 75 m/sec. If the club was in contact…

A: Given that the mass of the ball and final and initial velocity. Then We have to determine the value…

Q: What average force is necessary to stop a 45 caliber bullet of mass 15 grams and a speed of 300 m/s…

A: Given data: Mass of the bullet m = 15g=0.015kg Speed v= 300 m/s Distance s = 5 cm = 0.05 m

Q: A body of mass 40 kg has the mom 2000 kgm/s. Calculate; 1. Speed of the body. 2. K.E of the body.

Q: A simple pulley system consists of two masses connected by a thin rope. Mass A, 5.0 kg, is initially…

Q: Calculate the final speed (in m/s) of a 106 kg rugby player who is initially running at 7.50 m/s but…

Q: An office worker smacks a table, bringing his hand to rest in 0.0025 seconds from an initial speed…

A: Given data: Time (t) = 0.0025 s Initial velocity (v0) = 4.00 m/s Final velocity (v) = 0 m/s Mass (m)…

Q: A 5.0 kg mass drops vertically from a height 4.0 m on the plate on top of a spring bala whose force…

Q: A runner of mass 50kg and speed of 3m=s doesn't pay attention for a moment and slams into an…

Q: A block initially at rest explodes into two pieces E and D, which slide on a floor in a stretch…

A: Friction always oposses the change in motion

Q: The 20-lb block has a speed of 8 ft/s when the force of F = (16t^3) lb is applied. Determine the…

A: Let m denotes the block’s mass, F denotes the applied force, f denotes the friction force, µ denotes…

Q: A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 7.8 m/s.…

Q: Calculate the final speed (in m/s) of a 100 kg rugby player who is initially running at 7.50 m/s but…

Q: a 1.75-kg block at rest on a ramp of height h.When the block is released, it slides without friction…

A: From conservation of energy, the required expression for the height is,

Q: An arrow, starting form rest, leaves the bow with a speed of 25.0 m/s. If the average force exerted…

A: The given data are: u=25 m/sF'=2F Here, u is the speed in the first case, F' is the average force in…

Q: Gayle runs at a speed of 3.95 m/s and dives on a sled, initially at rest on the top of a…

A: Given that:- Mass of Gayle=47kg Mass of sled=5.4kg Mass of Gayle's brother=30kg Initial speed of…

Q: An office worker smacks a table, bringing his hand to rest in 0.0025 seconds from an initial speed…

Concept explainers

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.

Question

A railroad diesel engine weighs four times as much as a freight car.

If the diesel engine coasts at 4.0 km/h into a freight car that is intitally at rest, find the speed of the coupled cars. Express you answer to two significant figures and include appropriate units.

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

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Trending now

This is a popular solution!

Step by step

Solved in 7 steps with 6 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

Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s butt collides head-on with a padded goalpost and experiences a backward force of l.76104N for 5.50102s .
Repeat the preceding problem for the case when the initial speed of the second object is nonzero.
Check Your Understanding There is a second solution to the system of equations solved in this example (because the energy equation is quadratic): v1.f=-2.5m/s , v2.f=0 . This solution is unacceptable on physical grounds; what’s with it?
Mr. M is driving his truck, which has a mass of 2200kg, at a speed of 125km/h on the 401. He notices a police officer 55m up ahead, so he taps his breaks. If he "taps" for a distance of 55m, and his breaks apply a force of 450 N, how fast will he be going when he passes the police officer?
Calculate the final speed (in m/s) of a 104 kg rugby player who is initially running at 7.75 m/s but collides head-on with a padded goalpost and experiences a backward force of 1.65 ✕ 104 N for 6.00 ✕ 10−2 s.
Sue gets up on the roof to clean off the leaf litter. Upon trying to get back down the ladder, she gets scared and doesn't think she can go down that way. She contemplates jumping off the roof, but has heard that is unsafe. If the roof is 10 feet high and she has a mass of 68.1 kg, how fast would she be going when she hit the ground if she jumped? State your answer in mi/hr.
A 60.0 kg skier with an initial speed of 12.5 m/s coasts up a 2.50 m high rise as shown in the figure. Find her final speed right at the top, in meters per second, given that the coefficient of friction between her skis and the snow is 0.31.
If a 1100kg car is sent toward a cement wall with a velocity of 15m/s and the timeof impact stops the car in 0.09s, with what average force is it brought to astop?
Some office workers use a sledgehammer to hit their broken computer and push it across an open field. If the computer has a mass of 5.2 kg and moves across the field with an initial velocity of 10.4 m/sec, how far will it travel before coming to a rest from friction (uopenfield = 0.45)?
Gayle runs at a speed of 4.00 m/s and dives on a sled, initiallyat rest on the top of a frictionless, snow- covered hill. After shehas descended a vertical distance of 5.00 m, her brother, whois initially at rest, hops on her back, and they continue downthe hill together. What is their speed at the bottom of the hillif the total vertical drop is 15.0 m? Gayle’s mass is 50.0 kg,the sled has a mass of 5.00 kg, and her brother has a mass of30.0 kg.
A 480-kg car moving at 16.4 m/s hits from behind a 570-kg car movingat 13.3 m/s in the same direction. If the new speed of the heavier car is 14.0 m/s,(a) what is the speed of the lighter car after the collision, assuming that anyunbalanced forces on the system are negligibly small, and(b) what average power is dissipated during the collision if they collide for 1.4seconds?
In a dramatic rescue mission, Dr. Porter was up on a 15-meter-high cliffside where she saw a box of her favorite biochemistry textbooks about to be swept away by an oncoming rush of water. To save the books, she quickly realized the only way was to swing down Tarzan style and grab the books, safely landing on a low cliffside on the other side with the books in hand. If she weighs 2.5 times the mass of this box of books, how high is the lower cliffside if she ends up with 0 final velocity at the top of the lower cliffside.