Question

The EF Express, a train similar to the one shown above, has 3 locomotives (71 tons each) and 75 coal cars (32 tons each). The train is going down a 1.1% incline. Use positive as the direction the train is going This problem DOES need to be written out for your Rortfoli A complete FBD-KD for each of part must be included EXAMPLE EXAMPLE NOTES IMAGES Discuss UNITS STATS HELP Part Description History What is the acceleration of the train if it is allowed to roll down A: 0.1078 A. the track (no friction, braking, C: 0.3542 # tries: 1 Show Details or tractive force)? (include units with answer) What is the magnitude of the force in the coupling between A: O N the locomotives and the cars C:0.000 kip while rolling down the incline? (include units with answer) # tries: 2 Show Details engines are started and the tractive force provided by each A: 0.2164 locomotive is 19300 lbs, what is m/s^2 the acceleration of the train as it C: 0.7109 goes down the 1.1% incline? (include units with answer) C. # tries: 6 Show Details ft/s2 What is the magnitude of the force in the coupling between the locomotives and the cars while going down the 1.1% incine with a tractive force provided by each locomotive of C: 53.18 kipHints: 10 19300 lbs? (include units with answer) 236557.55 # tries: 1 Show Details Points D/T) Ans Time Feedback Wrong engines are turned off so Your answer of 53226.78 N was converted to 11.965856 kip . 53226.78 N 2018-09-21 9.12 there is no tractive force. The train is moving at 10 mph down 202438.S N the indline. What is the required magnitude of the braking force to bring the train to a stop in 1460 ft? (include units with answer) 16:52:57 (0.912*1) What about the weight of the train? WARNING: 7 SF given, 3 SF expected Format Check E. 2% try penalty Wrong 2018-09-21 18.88 202438.5 N 17:56:52 (907*o.98) Your answer of 202438.5 N was converted to 45.509985 kip WARNING: 7 SF given, 3 SF expected . Hints: 2.1 Current problem value: 86.3% of 10 tries: 2 Hide Details

Can anyone do part E, please?

Hint #1:	Find required acceleration using constant acceleration equations.
Hint #2:	Use FBD of entire train.

Answer 1