Monday

July 28, 2014

July 28, 2014

Number of results: 33,036

**algebra**

1. The speed of a passenger trin is 18mph faster than the speed of a freight train. The passenger train travels 260 miles in the same time it takes the feight train to travel 170 miles. Find the speed of each train.
*November 17, 2011 by lisa*

**English**

1. When he was trveling by train, he met the girl. 2. Being traveling by train, he met the girl. 3. Traveling by train, he met the gril. (Are the three sentences correct and the same?)
*May 21, 2009 by John*

**math**

train A and train B traveling same direction. train A passes station 9:20, train B passes station 9:32, when will train B catch train A
*May 3, 2012 by Randy*

**Math Word Problem**

A metra commuter train leaves Union Station in Chicago at 12 noon. Twp hours later an Amtrak train leaves on the same track, traveling at an average speed that is 50 miles per hour faster than the Metra train. At 3PM the Amtrak train is 10 miles behind the commuter train. How ...
*September 16, 2010 by amy*

**physics**

I need help with this question. A commuter train blows its horn as it passes a passenger platform at a constant speed of 55.0 m/s. The train horn sounds at a frequency of 350 Hz when the train is at rest. (a) What is the frequency observed by a person on the platform as the ...
*April 21, 2008 by Chris Adison*

**Math**

you are 70 meters from train and road crossing with the train going 60meters per second, after 4 seconds has fast is the train traveling away from you?
*January 8, 2011 by Tom*

**physics**

A commuter train passes a passenger platform at a constant speed of 40.0 m/s. The train horn is sounded at its characteristic frequency of 320 Hz. What overall change in frequency is detected by a person on the platform as the train moves from approaching to receding?
*January 28, 2011 by julie*

**Physics**

A freight train has a mass of 1.0 10^7 kg. If the locomotive can exert a constant pull of 7.5 10^5 N, how long does it take to increase the speed of the train from rest to 66 km/h?
*September 9, 2011 by Ozy*

**physics**

A freight train has a mass of 1.5 x 10^7 kg . If the locomotive can exert a constant pull of 7.5 X 10^5 N, how long does it take to increase the speed of the train from rest to 80 km /h?
*November 13, 2012 by tionne*

**Algebra**

Two trans leave Chicago going opposite directions, one going north and the other going south. The northbound train is traveling 12 mph slower than the southbound train. After 4 hours the trains are 528 miles apart. Find the speed of each train. I would appreciated so much if ...
*January 26, 2011 by Megan Brown*

**physics**

The last car unfastens from a moving train. The train continues to move at the same constant speed. What is the ratio of the paths covered by the train and car up to the moment of the car’s stop? Assume that the car decelerates uniformly. Solve this problem graphically.
*August 17, 2011 by Anonymous*

**Physics of Vehichle **

A 1400 kg car rounds a curve of 57 m banked at an angle of 14 degrees If the car is traveling at 98 km/h, will a friction force be required? If so, in what direction? May someone please walk me through this problem step by step? Thank you
*June 16, 2012 by Mike Joseph*

**Physics**

A curve of radius 55 m is banked so that a car of mass 1.5 Mg traveling with uniform speed 57 km/hr can round the curve without relying on friction to keep it from slipping on the surface.
*November 16, 2011 by Samantha*

**Algebra**

A freight train leaves Chicago traveling West at 35 mph. An hour later a passenger train leaves Chicago traveling on a parallel track at 60 mph. How far from Chicago will the passenger train catch up to the freight train?
*April 28, 2013 by Sarah*

**Algebra Grade 7**

You took a train trip to visit your cousin. By 10:15 the train had traveled 20 mi. By 10:30 the train had traveled an additional 10 mi. You are now halfway to your cousin’s town. At what time will you reach your cousin’s town if the train’s speed is constant?
*October 26, 2012 by rawr... im a dinosaur.... rawr *

**physics**

A 710 kg car travels along US-321. How much working is needed to keep the car traveling at a constant speed of 21.1 m/s around a curve of radius 28.2 m?
*December 10, 2009 by Cory *

**math**

Train A is 12 mph slower than train B. Train A travels 230 miles in the same time it takes train B to travel 290 miles. Find the speed of each train.
*May 20, 2010 by Marie*

**math**

Train A is 12 mph slower than train B. Train A travels 230 miles in the same time it takes train B to travel 290 miles. Find the speed of each train.
*May 20, 2010 by Help Me Pleeease*

**Physics **

A car rounds a curve with a radius of 25 m at a speed 30 m/s. What is the centripetal acceleration of the car?
*September 22, 2013 by Alison*

**physics **

A freight train has a mass of 1.4 107 kg. If the locomotive can exert a constant pull of 8.1 105 N, how long does it take to increase the speed of the train from rest to 66 km/h?
*October 7, 2011 by savy*

**Physics**

A freight train has a mass of 1.7 107 kg. If the locomotive can exert a constant pull of 7.6 105 N, how long does it take to increase the speed of the train from rest to 64 km/h?
*February 1, 2012 by Tiffany*

**Physics**

A freight train has a mass of 1.2 107 kg. If the locomotive can exert a constant pull of 8.4 105 N, how long does it take to increase the speed of the train from rest to 88 km/h?
*February 11, 2013 by Kayka*

**Math**

A train going 60 mph left several minutes before the 63mph train. Traveling on parallel tracks the faster train reaches the slower one in 3 hours. How many minutes head start did the slower train have?
*May 23, 2011 by Hannah Montana*

**math 117**

A passenger train can travel 325 mi in the same time a freight train takes to travel 200 mi. If the speed of the passenger train is 25 mi/h faster than the speed of the freight train, find the speed of each. Speed = distance/time Therefore time = distance/speed. Assume the ...
*July 11, 2007 by Diana*

**Physics**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 8.2 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 62° when they move past the window. How fast is ...
*September 3, 2007 by Student*

**physics**

A freight train has a mass of 1.9 107 kg. If the locomotive can exert a constant pull of 7.5 105 N, how long does it take to increase the speed of the train from rest to 90 km/h in minutes?
*February 17, 2010 by Anonymous*

**physics**

A freight train has a mass of 1.2 107 kg. If the locomotive can exert a constant pull of 6.5 105 N, how long does it take to increase the speed of the train from rest to 60 km/h? ____min
*September 29, 2010 by jerr*

**physics**

A freight train has a mass of 5 x 107 kg. If the locomotive can exert a constant pull of 12 x 105 N, how long would it take to increase the speed of the train from rest to 85 km/h
*November 1, 2010 by Devon*

**physics**

A freight train has a mass of 2.1 × 10^7 kg. If the locomotive can exert a constant pull of 6.2 × 10^5 N, how long would it take to increase the speed of the train from rest to 77.7 km/h? (Disregard friction.)
*December 17, 2010 by jay*

**physics**

A freight train has a mass of 6.5 107 kg. If the locomotive can exert a constant pull of 11.5 105 N, how long would it take to increase the speed of the train from rest to 85 km/h? s
*January 2, 2011 by Anonymous*

**physics!**

A freight train has a mass of 1.8 × 10 7 kg. If the locomotive can exert a constant pull of 6.2×10 5 N, how long does it take to increase the speed of the train from rest to 70 km/h? Answer in units of min.
*January 5, 2011 by monica*

**physics**

A freight train has a mass of 1.5 107 kg. If the locomotive can exert a constant pull of 6.9 105 N, how long does it take to increase the speed of the train from rest to 72 km/h? min
*February 16, 2012 by smh*

**physics**

A freight train has a mass of 1.6 × 10 7 kg. If the locomotive can exert a constant pull of 8.0 × 10 5 N, how long would it take to increase the speed of the train from rest to 80.3 km/h? Disregard friction
*October 29, 2012 by DAE*

**Physics**

A train with a mass 5x10^5 kg is moving with a speed 80km/hr. If the train stops in 2min...1)What is the acceleration of the train? 2) What is the braking force applied to the train?
*February 4, 2013 by Clare*

**physics**

A 783 kg car travels along US 321. What net force is required to keep the car traveling at a constant speed of 28.8 mph around a curve whose radius is 26.4 m?
*November 20, 2009 by Alex*

**math**

A passenger train travelled at an average speed of 72 km/h. A man on the passenger train observed a goods train, which was travelling at a speed of 54 km/h, in the on-coming direction. If the goods train passed him in 10 seconds, find the length of the goods train. Is it ...
*September 3, 2012 by Im*

**MATHS**

A TRAIN B SPEEDING WITH 120KMPH CROSSES ANOTHER TRAIN C, RUNNING IN THE SAME DIRECTION IN 2 MINUTES. IF THE LENGTH OF THE TRAIN B AND C BE 100M AND 200M RESPECTIVELY. WHAT IS THE SPEED OF THE TRAIN C
*June 23, 2010 by PRIYA*

**math**

A computer train travels the distance from Acton to Boston in 1 hour and 10 minutes. If the train is traveling at an average speed of 48 miles per hour, what is the distance between the two cities?
*July 16, 2013 by andrew*

**math**

A commuter train travels the distance from Acton to Boston in 1 hour and 10 minutes. If the train is traveling at an average speed of 48 miles per hour, what is the distance between the two cities?
*July 17, 2013 by vincent*

**physics**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 4.15 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 25° when they move past the window, as the ...
*September 19, 2010 by ba*

**Physics**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 3.6 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 60° when they move past the window, as the drawing...
*February 16, 2014 by Steph*

**physics**

A 726 kg car travels from Boone to Blowing Rock along US321. How much working is needed to keep the car traveling at a constant speed of 21.8 m/s around a curve of radius 28.4 m?
*December 5, 2010 by KC*

**Physics**

Some how TRAIN A travelling at 36 m/s, is accidentally sidetracked onto the train track for TRAIN A. The TRAIN A engineer spots TRAIN A 100 m ahead on the same track and travelling in the same direction. The engineer jams on the brakes and slows TRAIN B at a rate of 3m/s^2. ...
*January 14, 2011 by Taylor*

**math**

Supppose two trains leave Holbrook, Arizona, at the same time, traveling in opposite directions. One train travels 10 mph faster than the other. In 3.5 hours, the trains are 322 miles apart. Find the speed of each train.
*December 4, 2012 by justin*

**algebra**

The speed of a passenger train is 18mph faster than the speed of a freight train. The passenger train travels 260 miles in the same it takes the same time it takes the freight train to travel 170 miles. Find the speed of each train.
*June 1, 2012 by plz hlp*

**math**

).Find all numbers for which the rational expression is undefined. (4)/(v-2) 2).Find the lcm of (6+7u), (36-49^(u^2)),and(6-7u) ? 3). The speed of train a is 14 mph slower than the speed of train b. Train a travels 190 miles in the same time it takes train b to travel 260 ...
*May 29, 2010 by alia*

**physics**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 6.6 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of θ = 36° when they move past the window as the...
*September 6, 2010 by demi*

**physics**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 8.1 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of θ = 25° when they move past the window as the...
*February 3, 2012 by Cody*

**College Physics 1**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 6.17 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 25° when they move past the window, as the ...
*September 20, 2013 by Autianna*

**algebra**

A. The speed of train A is 6mph slower than the speed of train B. Train A travels 220 miles in the same time it takes for train B to travel 250 miles find the speed of each train solve and check: q+9/3 + 9-4/4 = 13/3 simplify by removing factors of 1 : 7y-14/7y add: x+6/x + x/...
*November 21, 2010 by Anonymous*

**physics**

A freight train has a mass of 3.2 × 107 kg. If the locomotive can exert a constant pull of 7.1 × 105 N, how long would it take to increase the speed of the train from rest to 74.6 km/h? (Disregard friction.)
*January 9, 2011 by jena*

**physics**

A freight train has a mass of 1.5 × 107 kg. If the locomotive can exert a constant pull of 4.9×105 N, how long does it take to increase the speed of the train from rest to 74 km/h? Answer in units of min.
*March 30, 2011 by jenn*

**physics**

A freight train has a mass of 3.1 × 107 kg. If the locomotive can exert a constant pull of 4.9 × 105 N, how long would it take to increase the speed of the train from rest to 71.9 km/h? Disregard friction.
*November 3, 2012 by scott*

**Physics **

A freight train has a mass of 1.7 × 10^7 kg. If the locomotive can exert a constant pull of 5.2 × 10^5 N, how long would it take to increase the speed of the train from rest to 74.6 km/h? Disregard friction. Answer in units of s
*November 7, 2012 by John *

**Physics**

Hi everyone, finished all my utexas physics homework, save this last question... I don't quite why I'm not getting the right answer. Any help offered will be appreciated, it could lead me to the right answer :) P.S.---- I've already imputed the following four answers which ...
*October 24, 2010 by Kyle*

**Physics**

Hi everyone, finished all my utexas physics homework, save this last question... I don't quite why I'm not getting the right answer. Any help offered will be appreciated, it could lead me to the right answer :) P.S.---- I've already imputed the following four answers which ...
*October 24, 2010 by Kyle*

**Math - What is the length of the train??????**

I have NO IDEA on how to tackle the following problem. This question has stumped me for like...2 hours now...and I don't know what to do... If someone could please show me a step by step on solving it, please post! Problem: -------- Two people stand back to back next to the ...
*November 27, 2007 by Anonymous*

**Algebra**

Is there an easier way to do this? "A freight train leaves a station at 4:00 p.m. traveling at 30 kilometers per hour. A passenger train leaves 1 hour later, traveling at 50 kilometers per hour. At what time will the passenger train overtake the freight train?
*January 3, 2011 by Rachel*

**physics**

Imagine you are sitting in a car tossing a ball straight up into the air. a) If the car is moving at constant velocity will the ball land in front of, behind, or in your hand? b) If the car rounds a curve at constant sped where will the ball land?
*March 1, 2012 by annoymus*

**Physics**

A train travels east at a speed of 50 m/s. A passenger is walking towards the rear of the train at a speed of 3 m/s. Assume that you are standing at the train station and observing the motion of the passenger as the train passes you at the station. What is the velocity of the ...
*January 7, 2013 by Shaundrea*

**physics**

In the movie Spiderman 2, there's a famous minute long scene where Spiderman stops a train. If the initial speed of a five car out of control subway train was around the top speed of the NYC subway (27 m/s), and Spiderman stopped the train in exactly one minute, then what is ...
*June 4, 2013 by keshav*

**Physics**

A freight train has a mass of 1.5*10^7 kg. If the locomotive can exert constant pull of 4.5 *10^5N, how long does it take to increase the speed of the train from res to 80.0km/hr? a)467s b) 444s c)527s d) 425s e) 496s
*October 9, 2012 by Mark*

**Algebra**

Train a is traveling @ 60 miles per hour. Train b is traveling @ 80 miles per hour. A arrives @ 9:25 am and b arrives @ 9:40 am what ime will train b catch up to train a?
*June 12, 2011 by David*

**math**

Two trains are traveling the same direction, train a is going 60 mph and train b is going 70 mph, after one hour how long will it take train a to reach the point train b was at the hour marker.
*September 2, 2012 by kyle*

**physics**

1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2. 2.An airplane taking off from a landing field has a run of 500 m. It starts from rest, moves with constant acceleration, and makes the run in 30 s. ...
*October 9, 2010 by jazz*

**Math**

Trains A & B are traveling in the same direction on parallel tracks. Train A is going 60mph and Train B at 80mph. Train A passes a station at 6:25 am. If Train b passes the same station at 6:37, what time will B catch up with A? The answer I received is: 7:03am, is that correct?
*April 7, 2010 by Richard*

**physics**

An automobile of mass 1.46 E3 kg rounds a curve of radius 25.0 m with a velocity of 15.0 m/s. The centripetal force exerted on the automobile while rounding the curve is?
*December 17, 2012 by Anonymous*

**Physics **

A curve of radius 59.9 m is banked so that a car of mass 1.4 Mg traveling with uniform speed 50 km/hr can round the curve without relying on friction to keep it from slipping on the surface. At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2 * I ...
*June 24, 2013 by MM*

**physics**

Posted by sandhu on Wednesday, November 24, 2010 at 4:29am. The firetruck goes around a 180°, 162 m radius circular curve. It enters the curve with a speed of 12.6 m/s and leaves the curve with a speed of 38.8 m/s. Assuming the speed changes at a constant rate, what is the ...
*November 24, 2010 by sandhu*

**physics**

A train on one track moves in the same direction as a second train on the adjacent track. The first train, which is ahead of the second train and moves with a speed of 31.3 m/s, blows a horn whose frequency is 124 Hz. If the frequency heard on the second train is 136 Hz, what ...
*December 7, 2010 by aok*

**Physics**

A car whose speed is 90.0 km/h (25 m/s) rounds a curve 180 m in radius that is properly banked for speed of 45 km/h (12.5 m/s). Find the minimum coefficient of friction between tires and road that will permit the car to make a turn. What will happen to the car in this case? My...
*August 15, 2012 by TJR*

**Physics**

A train traveling at a speed of 110 km/h uniformly decelerates for 20 seconds. During that time it travels 450 m. a. What is the acceleration ? = m/s2 b. What is its speed after the deceleration ? = km/h
*November 8, 2013 by Tom*

**physics**

A special train is traveling down a long, straight track with a constant acceleration of 9m/s^2 in the forward direction. The train is located on Mars where the acceleration due to gravity is 9 m/s^2. If a passenger drops a ball and measures the acceleration of the ball, the ...
*April 6, 2014 by anonymous*

**Physics**

A flat (unbanked) curve on a highway has a radius of 200 m. A car rounds the curve at a speed of 26.0 m/s. What is the minimum coefficient of friction that will prevent sliding? Our professor didn't even go over this, and it is way more complex than anything in the book. Plus...
*September 22, 2006 by Josh*

**Physics**

A freight train has a mass of 1.2 × 107 kg. If the locomotive can exert a constant pull of 5.0 × 105 N, how long would it take to increase the speed of the train from rest to 89.2 km/h? (Disregard friction.) Answer in units of s.
*January 10, 2011 by Michael*

**physics**

A man is 3/8th of the way across a railroad bridge when he hears a train coming. He knows that this passenger train cruises along at 60 MPH in this area. It turns out that he can run to either end of the bridge and jump off just ahead of the train. Assuming he runs a a ...
*April 29, 2013 by Pam*

**math**

a freight train that is 1 mile long is traveling at 60mph. a second train that is 2 miles long is traveling 40mph. the trains are moving in opposite directions on parallel tracks. how many seconds does it take between the time their locomotives meet and their cabooses fully ...
*October 17, 2010 by bob*

**Physics**

A train is moving towards a destroyed bridge. The velocity of the train remains constant at 20 m/s. A person inside the train realizes that they will die unless they run to the back of the train and jump out. If the person is 15 m from the back of the train and the back of the...
*February 26, 2013 by Dan*

**Physics**

Racing on a flat track, a car going 32 m/s rounds a curve 56 m in radius. What is the force of friction needed for the car to round the curve without slipping?
*November 4, 2012 by Christy*

**Math**

An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two trains traveling?
*October 24, 2012 by awade*

**math**

A northbound train and a southbound train meet each other on parallel tracks heading in opposite directions. The northbound train travels 12 miles per hour faster than the southbound train. After 2.5 hours, they are 330 miles apart. At what speeds are the two trains traveling?
*January 4, 2013 by treena*

**Physics**

A train moving at a constant speed on a surface inclined upward at 10.0° with the horizontal travels a distance of 400 meters in 5 seconds. Calculate the vertical velocity component of the train during this time period.
*February 22, 2012 by Lauren01*

**physics**

A train 400 m long is moving on a straight track with a speed of 80.1 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.9 km/h. Assuming constant acceleration, determine how long the train blocked the crossing. ...
*February 3, 2012 by sally*

**physics**

A train 400 m long is moving on a straight track with a speed of 80.1 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.9 km/h. Assuming constant acceleration, determine how long the train blocked the crossing. ...
*February 3, 2012 by sally*

**Physics**

A train 500 m long is moving on a straight track with a speed of 84.2 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.4 km/h. Assuming constant acceleration, determine how long the train blocked the crossing....
*March 5, 2014 by Bob*

**physics**

A student rides on a train traveling at Vt = 36ikm/hr (with the respect to the ground). What are the speed and the velocity of the student with respect to the ground if he runs at 5.0im/s? -5.0 m/s? 5.0j m/s perpendicular to the direction of motion of the train?
*January 11, 2012 by Annie*

**Physics **

A 1400-kg car rounds a curve of 57-m banked at an angle of 14 degrees. If the car is traveling at 98-km/h (27-m/s), will a friction force be required? If so in what direction? How much friction force will be required?
*June 14, 2012 by Mike *

**physics**

A freight train has a mass of 1.7 multiplied by 107 kg. If the locomotive can exert a constant pull of 7.4 multiplied by 105 N, how long does it take to increase the speed of the train from rest to 68 km/h?
*September 21, 2010 by kyle*

**NATURAL SCIENCE**

Does a train traveling at 20 mph on a curved track have a constant velocity?
*May 9, 2012 by MIKE*

**physics **

A train is moving with a speed of 50 miles per hour. A man standing in the rear of a train car throws a ball toward the front of the train with a speed of 10 miles per hour. If a stationary observer outside the train sees this happen, what speed is the ball moving with? ...
*May 1, 2011 by ashley --- HELP PLEASEE!!!*

**college physics**

i need solutions for all this problems...help please.... 1.) an electron moving at a speed of 4x10 power of 6 m/s, shot through a sheet of paper which is 3x10 to power of -5 m thick. the electron energyfrom the sheet with with a speed of 2x10 to the power of 6 m/s. find the a...
*July 29, 2009 by jhenz*

**physics**

A 1 500-kg car rounds an unbanked curve with a radius of 52 m at a speed of 12 m/s. What minimum coefficient of friction must exist between the road and tires to prevent the car from slipping? (g = 9.8 m/s2)
*February 9, 2012 by jay*

**physics**

highway curve in northern Minnesota has a radius of 230 m. The curve is banked so that a car traveling at 21 m/s and will not skid sideways, even if the curve is coated with a frictionless glaze of ice. At what angle to the horizontal is the curve banked?
*February 27, 2014 by Anonymous*

**college physics**

A freight train has a mass of 1.7 multiplied by 107 kg. If the locomotive can exert a constant pull of 7.4 multiplied by 105 N, how long does it take to increase the speed of the train from rest to 68 km/h?
*September 21, 2010 by rachel*

**physics**

If a 9800kg train car traveling at 15m/s impacts another train car at rest and after the impact the 2 are going 6m/s. What is the mass of the second train car?
*March 1, 2011 by Mark*

**physics**

a train slows down from 104m/s to 76m/s with constant decceleration in 440m. 1) what is the acceleration of the train? 2) how long does it take the train to travel this distance? 3) plot the position, velocity and acceleration of the train during this time interval as a ...
*September 14, 2011 by arty*

**math,correction**

Problem #1 Number problem. If one-half of one integer is subtracted from three-fifths of the next consecutive integer, the difference is 3. What are the two integers? My answer is: the two integers are 24 & 25 Problem#2 Science and medicine. A passenger train can travel 325 mi...
*March 7, 2007 by jas20*

**physics**

A 3670 lb car going around an unbanked curve at a constant speed of 25 mph begins to slide (ìs=0.55 and ìk=0.45). What is the radius of the curve?
*November 23, 2010 by sandhu*

**College math**

Highway curves If a circular curve without any banking has a radius of R feet, the speed limitL.in miles per hour for the curve is L=1.5 R. (a.)Find the speed limit for a curve having a radius of 400 feet. (b.) If the radius of a curve doubles, what happens to the speed limit...
*April 28, 2011 by Shin*

**PHYSICS**

A train starts from rest and accelerates uniformly, until it has traveled 3 km and acquired a velocity of 20 m/s The train then moves at a constant velocity of 20 for 400 s. The train then slows down uniformly at 0.065 m/s2 until it is brought to a halt. Calculate the total ...
*May 25, 2010 by CHLOE*

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