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February 1, 2015

Search: A train is traveling up a 5.0 incline at a speed of 2.20 m/s when the last car breaks free and begins to coast without friction. "How long does it take for the last car to come to rest momentarily?"

Number of results: 35,263

physics
Car A, with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s to the west. What will ...
February 4, 2013 by william mclaren

physics
Car A with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. assume these two vehicles experience an inelastic collision but do not stick together, and car A goes off 10 m/s to the west. what will ...
January 5, 2014 by jeremy

physics
Car A with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. assume these two vehicles experience an inelastic collision but do not stick together, and car A goes off 10 m/s to the west. what will ...
January 5, 2014 by jeremy steadman

math
The diagram below shows the speed time graph for a train travelling between two stations. The train starts from rest and accelerates uniformly for 150 seconds. It then travels at a constant speed for 300 seconds and finally decelerates uniformly for 200 seconds. Fig. Given ...
June 2, 2012 by Anonymous

Northwest H.S
Physics: A car is parked on an icy hill inclined at 10, when it begins to slide. What is the car's speed at the bottom of the 155-m hill?:
October 16, 2012 by Jimmy

Physic Check
These are questions I'm unsure about out of 20 for my submission #2. Someone please check soon. My answers have an =. 1.)A ball is rolling across the top of a billiard table and slowly rolls to a stop. How would Galileo explain the motion of the ball as it stopped? a)The ball'...
July 12, 2010 by Ariel

Physics
A car traveling 56 km/h is 21.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.17 s later. a)What was the car's constant deceleration before impact? b)How fast was the car traveling at impact?
September 2, 2009 by Nick

physics
A person throws a 2.50 lb stone into the air with an initial upward speed of 15.0 ft/s. Part A- Make a free-body diagram of the forces for this stone after it is free of the person's hand and is traveling upward Part B - Make a free-body diagram of the forces for this stone at...
February 2, 2012 by sam

Physics
A train blows its horn as it approaches a crossing. The train engineer observes a frequency of 118 Hz and a stationary observer observes a frequency of 122 Hz. What is the speed of the train? Use the speed of sound as 340m/sec
March 20, 2014 by Paul

Physics
At the instant a traffic light turns green, a car starts moving with a constant acceleration a of 3.05 m/s^2. At the same time a truck, traveling with a constant speed of 10.15 m/s, overtakes and passes the car. How far beyond the traffic light will the car overtake the truck...
October 8, 2007 by Lindsay

SCIENCE
A TRAIN GOES FORWARD AT A SPEED OF 1M/S FOR 20 SECONDS. THEN IT STOPS AND GOES BACKWARD AT A SPEED OF 0.5M/S FOR 4 SECONDS. AFTER BOTH MOVEMENTS ARE COMPLETED, HOW FAR IS THE TRAIN LOCATED FORM ITS STARTING POINT? WHAT IS THE TRAIN'S FINAL LOCATION?
July 18, 2010 by Anonymous

physics
2. A car of mass 1540 kg traveling at 28 m/s is at the foot of a hill that rises 125 m in 3.6 km. At the top of the hill, the speed of the car is 8 m/s. Find the average power delivered by the car's engine, neglecting any frictional losses.
October 5, 2010 by rizzo

physics
A car of mass 1410 kg traveling at 26 m/s is at the foot of a hill that rises 115 m in 4 km. At the top of the hill, the speed of the car is 14 m/s. Find the average power delivered by the car's engine, neglecting any frictional losses.
October 4, 2012 by Rodrigo

physics
Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1460-kg car that descends a 15.5 hill. The car begins braking when its speed is 92 km/h and slows down to a speed of 28 km...
February 14, 2011 by Johnathon

Physics
Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1360-kg car that descends a 13.5 hill. The car begins braking when its speed is 88 km/h and slows down to a speed of 36 km...
February 12, 2013 by Thomas

PHYSICS-URGENT HELP
A stationary police car emits a sound of frequency 1200 Hz that bounces off of a car on the highway and returns to the police car with a frequency of 1250 Hz. The police car is right next to the highway, so the moving car is traveling either directly towards or directly away ...
July 29, 2011 by Brit

Physics
A box is sliding up an incline that makes an angle of 17.0 with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 1.40 m/s. How far does the box ...
September 17, 2007 by NHS

Physics
A box is sliding up an incline that makes an angle of 12.0 with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 1.30 m/s. How far does the box ...
October 21, 2011 by Peter

Physics
A box is sliding up an incline that makes an angle of 13.0 with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 1.80 m/s. How far does the box ...
October 29, 2012 by Anonymous

College Physics
A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)?. Additional: I know its a ...
October 22, 2010 by Ryan

physics
A car of mass m traveling at speed v on a horizontal road applies its brakes and comes to rest in time t while traveling a distance of d. The amount of internal energy created is?
March 23, 2013 by wyatt

physics
car a with mass of 1250kg, is traveling at 30 m/s to the east. car b is a truck with mass of 2000kg, traveling to the west at 25m/s. assume these two vehicles experience an inelastic collision but do not stick together and car a goes off 10m/s to the west. what will be the ...
January 18, 2013 by mauro dar

Physics
1580 kg car is traveling with speed of 15 m/s. What is magnitude of horizontal net force that's required to bring the car to a stop in 50 m?
October 5, 2009 by Jenn

Physics
A car is traveling a road that makes quarter of a circle with a constant speed. What is the magnitude of the average velocity of the car?
March 1, 2011 by Jasalle

Physics
A car of mass m = 1450 kg is traveling at a speed of v0 = 79 km/h (21.9 m/s). Calculate the work that must be done by the brakes to completely stop the car in kJ
May 27, 2012 by Nate

Physics
A 12,000kg railroad car traveling at 12.0m/s couples with an identical car sitting on the tracks. What is the speed of the joined card?
April 22, 2014 by Shon

physics
a) calculate the acceleration of a 0.55-m-diameter car tire while the car is traveling at a constant speed of 25m/sec. b) compare this with acceleration experienced by a jet car tire of diameter 1.0m when setting a land speed record of 310m/sec
September 26, 2011 by lucy

Physics
Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. make a statement concerning its acceleration. a) the car is decelerating and its acceleration is positive b)the car is decelerating and its acceleration is negative c...
September 21, 2007 by Tammy

physics
Background knowledge: For cars traveling along dufferin,the speed is 60km/h. The distance to cross the intersection is 34m. Assume the length of a typical car is 4.5m. For safety reasons, the Ministry of Transportation recommends that vehicles stop with an acceleration no ...
July 12, 2014 by saarah

Integrated Algebra
A Japanese bullet train leaves the station tra traveling west at 164 mph. A pigeon which was resting on the train is startled and starts flying east at 40 mph. After two hours, how far apart are the pigeon and the train?
April 3, 2012 by DestinyLashea

math
distance = rate x time or d = r*t car traveling 40 mi/hr goes 40 mi/hr x 1.5 hrs head start or 60 miles head start. Let t = time bus and car travel. car travels distance of r*t = 40*t. Car already had 60 mi head start. Total distance car traveled is 60 + 40*t. distance bus ...
August 16, 2007 by DrBob222

PHYSICS
A bolt drops from the ceiling of a train car that is accelerating northward at a rate of 3.15 m/s2. What is the acceleration of the bolt relative to the train car? I don't understand how to do this problem at all... and why isn't it zero? It seems if the train is going forward...
January 7, 2010 by Laila

Math-word problem
A new train goes 20% further in 20% less time than an old train. By what % is the average speed of the new train GREATER THAN that of the old train?
July 5, 2011 by Michelle

Physics
A block of mass m = 2.80kg is held in equilibrium on a frictionless incline of angle= 56.6 by the horizontal force F. (a) Determine the value of F.(b) Determine the normal force exerted by the incline on the block. Hint: Draw a free-body diagram of the block. Choose a ...
May 9, 2013 by Thomas

Physics
A car initially traveling at 33.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m...
November 28, 2009 by Ed

Physics
A car initially traveling at 33.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m...
November 28, 2009 by Ed

Physics
A 850.0-kg car travelling on a level road at 27.0 m/s (60.5 mi/hr) can stop, locking its wheels, in a distance of 61.0 m (200.1 ft). (a) Find the size of the horizontal force which the car applies on the road while stopping. (b) Find the stopping distance of that same car when...
December 5, 2007 by Lindsay

science
a train goes forward at a speed of 1m/s for 20 seconds. Then it stops abd goes backward at a speed od 0.5 m/s for 4 seconds. After both movements are completed, how far is the train located from its starting point.(note: we are asking for the train's final location, not the ...
March 22, 2011 by veronic

physics
A 1790-kg car is traveling with a speed of 15.6 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 78.4 m?
January 27, 2011 by brian

physics
A 1790-kg car is traveling with a speed of 15.6 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 78.4 m?
January 28, 2011 by Anonymous

physics
6. A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m?
August 9, 2011 by rawaf

physics
A 1340 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 51.5 m?
September 14, 2011 by phillip

Physics
What is the impact speed when a car moving at 95km/h bumps into the rear of another car traveling in the same direction at 93km/h?
October 12, 2011 by Sarah

Physics
What is the impact speed when a car moving at 114.0 km/h bumps into the rear of another car traveling in the same direction at 104.5 km/h?
January 26, 2012 by Paige

physics
A 1370 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 49.5 m?
February 28, 2012 by u/a

Physics
A 1560 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 53.3 m?
September 21, 2012 by Kellie

Physics 1
A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?
October 3, 2012 by Anonymous

Physics
A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?
October 3, 2012 by Donald

physics
A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?
October 8, 2012 by Donald

physics
A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?
October 9, 2012 by Donald

physics
A 1523.7 kg car traveling with a speed of 20.8 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 53.5 m?
September 20, 2013 by paul

physics
The speed limit in a school zone is 38 km/h. A driver traveling at this speed sees a child run onto the road 16 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 8.5 m/s2. If the driver's reaction time is 0.55 s, What is the stopping ...
September 6, 2010 by emma

Physics
A train moving with constant velocity travels 190 north in 14s and an undetermined distance to the west. The speed of the train is 36m/s. Find the direction of the train's motion relative to north. How far west has the train traveled?
February 7, 2013 by Chelsea

11th grade
A box is sliding up an incline that makes an angle of 16.0 with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 1.30m/s. How far does the box ...
September 20, 2010 by shan lalani

science
The true speed of a moving car on the Earth, if you want to be very precise, would be the speed of the car with respect to the ground Is this true? yeah it is true yeah it is true The true speed of a moving car on the Earth, if you want to be very precise, would be the speed ...
May 10, 2007 by Haley

science
a train traveling at 100 km/h reduces its speed uniformly to rest in minutes.how far will it travel in 5 min
October 2, 2009 by ahsan

physics
a car is driving at 35 m/s when the driver hits the breaks causing the car to accelerate at -5 m/s How long will the car take to stop show your work
May 3, 2012 by lisa

physics
a car is running at 50 mph when the driver starts to step at the breaks. if the car decelerates at the rate of 7 ms^2, how long does it take the car stop?
November 30, 2014 by ynah

physics
A spaceship is observed traveling in the positive x direction with a speed of 150m/s when it begins accelerating at a constant rate. The spaceship is observed 25s later traveling with an instantaneous velocity of 1500m/s at an angle of 55 degrees above the +x axis. What was ...
July 27, 2008 by Don

Physics
PLEASE ANSWER ASAP!!!!!!!!!! step by step a) find the acceleration experienced by the driver of a car traveling at 50km/h if the car hits a pole and crumples 50cm. b) repeat part a) for a car traveling 100km/h
July 25, 2012 by ice

Physics
PLEASE ANSWER ASAP!!!!!!!!!! step by step a) find the acceleration experienced by the driver of a car traveling at 50km/h if the car hits a pole and crumples 50cm. b) repeat part a) for a car traveling 100km/h
July 25, 2012 by ice

physics
You are late for your train. You are running at a speed of 7 m/s to catch the train. When you are a distance of 100 meters from the station the train starts to pull away from the station with an acceleration of .2 m/s squared. Will you catch the train? Need explanation of ...
September 7, 2007 by Jessica

physics
You are late for your train. You are running at a speed of 7 m/s to catch the train. When you are a distance of 100 meters from the station the train starts to pull away from the station with an acceleration of .2 m/s squared. Will you catch the train? Need explanation of ...
September 7, 2007 by jessica

Physics
The speedometer of your car shows that you are traveling at a constant speed of 35 m/s. Is it possible that your car is accelerating? yes no If so, explain how this could happen. see the above post.
March 20, 2007 by Mary

physics
A car is traveling with a constant speed 80 miles per hour a road that makes half a circle. What is the average velocity of the car?
May 24, 2010 by ray

physics
A car is traveling a road that includes two sides of an equilateral triangle with a constant speed s. What is the magnitude of the average velocity v of the car?
March 8, 2011 by sandhu

Math
How long will it take a car traveling 65 mph to pass a car traveling 45 mph if the slower car had a 2 hour lead?
October 24, 2012 by Maria

Physics
A person standing close to a railroad crossing hears the whistle of an approaching train. He notes that the pitch of the whistle drops as the train passes by and moves away from the crossing. The frequency of the distant approaching whistle is 540 Hz; it drops to 470 Hz after ...
December 7, 2012 by Emily

Physics
A box is sliding up an incline that makes an angle of 15.0 degrees with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box and the surface of the incline is 1.50 m/s. How far does...
December 8, 2012 by Matoro

physics
Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).
February 18, 2014 by Anonymous

physics
A skateboarder, with an initial speed of 4.2m/s , rolls virtually friction free down a straight incline of length 16m in 3.3 s.
June 10, 2014 by Anonymous

physics
A solid sphere of weight 36.0 N rolls up an incline at an angle of 30.0o. At the bottom of the incline the center of mass of the sphere has a translational speed of 4.90 m s-1. Isphere = 2/5mr^2. What is the kinetic energy of the sphere at the bottom of the incline? How far ...
November 13, 2008 by kim

Algebra
I'm having a little trouble with this problem... Please try and walk me through the problem, too: #1. A motorboat leaves a dock and travels at an average speed of 15 mi/h toward an island. The average speed on the return trip is 10 mi/h. How far is the island from the harbor ...
November 20, 2008 by Celina

Physics
1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
June 5, 2013 by DANNY

Physics
1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
June 6, 2013 by Danny

Physics
1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
June 6, 2013 by Danny

Physics
1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
June 6, 2013 by Danny

Physics
1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...
June 6, 2013 by Danny

mitx 8.01x Classical Mechanics
A motorist traveling with constant speed of vc = 17.000 m/s passes a school-crossing corner, where the speed limit is 10 m/s. Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit. The officer accelerates from rest at am = 3....
September 10, 2013 by youlife

physic
Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).How much force does the train exerts on Superman?
July 2, 2011 by noah

physic
Superman must stop a 120km/h train in 150m to keep it from hitting a stalled car on the tracks.If the train's mass is 3.6x10^5kg,how much force must he exert?Compare to the weight of the train (give as%).How much force does the train exerts on Superman?
July 2, 2011 by noah

11th grade Physics
A car does 6.0 104 J of work in traveling 2.6 km at constant speed. What was the average retarding force (from all sources) acting on the car?
February 13, 2010 by Luricela

phy science
a 20,000kg railroad car is traveling at 3m/s when it collides and couples with a second, identical car at reat. What is the resulting speed of the combined cars?
June 21, 2012 by amy

physics
Suppose a cars brakes can produce an acceleration of -7m/s^2. If the car is traveling at an initial speed of 28m/s, what is the minimum distance necessary to stop the car?
July 7, 2012 by james

Physical Science
A 20,000 kg railroad car is traveling at 3 m/s when it collides and couples with a second, identical car at rest. What is the resulting speed of the combined cars?
September 24, 2013 by Jenna V

physics-important fast
A 1532.9 kg car traveling with a speed of 12.7 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.4 m?
December 13, 2013 by jack

physics
A racing car reaches a speed of 40 m/s. At this instant, it begins a uniform negative acceleration, using a parachute and a braking system, and comes to rest 5.0 s. (a)Determine the acceleration of the car. Work: 40m/s x 5s = 200m (0)^2=(40)^2 +2a(200) a=-4 m/s^2 (b) How far ...
September 7, 2007 by Anonymous

Physics
A car is being driven along a country road on a dark and rainy night at a speed of 20 m/s. The section of road is horizontal and straight. The driver sees that a tree has fallen and covered the road ahead. Panicking, the driver locks the breaks at a distance of 20m from the ...
November 6, 2011 by Anne

Trigonometry
The tires on a car have radius 14 inches. Find the angular speed of the car tire in revolutions per second when it is traveling 70 mph. Find the angular speed at 80 mph. The tires on a car are 15 inches. Find the linear speed of the car when the tires are rotating at 900 ...
January 21, 2012 by Will

Physics
A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact? _______ m/s2 (b) How fast was the car traveling at ...
September 19, 2012 by arcos15

Physics
A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact? _______ m/s2 (b) How fast was the car traveling at ...
September 19, 2012 by arcos15

Physics
Question: A car is on a ramp 100m from the bottom of the ramp (angle of incline=30 degrees): a. If the potential energy of the car is 80902 J, how much does the car weigh? b. What is the KE half way down the ramp? c. What speed is the car moving at the bottom of the ramp? ...
June 27, 2011 by Tina

physics
a train is moving at a speed of 5m/s. a person standing on the train throws a ball upwards at 10m/s. at the maximum height of the ball the train stopped. what is the deceleration of the train and what is the distance between the ball and the person finally?
March 29, 2013 by suvalakshmi

physics
A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 45.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 3.00 m/s^2. Including the reaction time, how long ...
September 6, 2012 by colby

physics
A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s^2. Including the reaction time, how long ...
June 18, 2013 by louis aaaa

Physics
A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 40.0 m/s due north. After a reaction time 0.500 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...
September 10, 2013 by Kaitlyne

physics
A police car is traveling at a velocity of 19.0 m/s due north, when a car zooms by at a constant velocity of 49.0 m/s due north. After a reaction time 0.600 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...
September 15, 2013 by Katy

Physics
A police car is traveling at a velocity of 19.0 m/s due north, when a car zooms by at a constant velocity of 49.0 m/s due north. After a reaction time 0.600 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...
September 16, 2013 by Tonya

Physics
A police car is traveling at a velocity of 20.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...
September 27, 2014 by Peanutbutter7

physics
The figure below shows a train with 3 compartments only. Each of the compartments has a mass of 30 tons . Two of them are motor cars while the other one is a trailer car. Each of the motor cars provides a driving force F. Suppose the train is accelerating at 1.5 m s−2 ...
September 28, 2014 by gregory

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