A railroad diesel engine weighs four times as much as a freight car. If the diesel...
A railroad diesel engine weighs four times as much as a freight car. If the diesel engine coasts at 5 km/h into a freight car that is initially at rest, show that the speed of the coupled cars is 4 km/h.
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A railroad diesel engine weighs four times as much as a freight
car. If the diesel...
QUESTION -PART 1 - A railroad diesel engine has a mass of m = 41000 kg...
QUESTION -PART 1 - A railroad diesel engine has a mass of m = 41000 kg and a speed of v = 5.6 m/s. Compute its kinetic energy KE PART 2 - The railroad diesel engine from the previous problem has collided with a freight car. The two have a combined mass of mD&F = 52000 kg and a speed of v = 3.2 m/s. Compute their combined kinetic energy. HELP
A railroad freight car, mass 15 000 kg, is allowed to coast along a level track...
A railroad freight car, mass 15 000 kg, is allowed to coast along a level track at a speed of 3.0 m/s. It collides and couples with a 54 000-kg loaded second car, initially at rest and with brakes released. What percentage of the initial kinetic energy of the 15 000-kg car is preserved in the two-coupled cars after collision? Answer options below. A. 14% B. 18% C. 78% D. 22% E. 38%
In the railroad freight yard, an empty freight car of mass m rolls along a straight...
In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.20 m/s and collides with an initially stationary, fully loaded boxcar of mass 5.20m. The two cars couple together on collision. A). What is the speed of the two cars after the collision? B). Suppose instead that the two cars are at rest after the collision. With what speed was the loaded boxcar moving before the collision if the empty one...
Question 3 A 20-Mg railroad car moving at 4 km/h is to be coupled to a...
Question 3 A 20-Mg railroad car moving at 4 km/h is to be coupled to a 40-Mg car which is at rest with locked wheels (HK = 0.30) as shown in Fig. 3. Determine (a) the velocity of both cars after the coupling is completed, and (b) the time it takes for both cars to come to a rest. 4 km/h 40 mg 20 mg SR ) Fig. 3
Required information In the railroad freight yard, an empty freight car of mass m rolls along...
Required information In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.20 m/s and collides with an initially stationary, fully loaded boxcar of mass 5.70m. The two cars couple together on collision. What is the speed of the two cars after the collision? m/s
4. A railroad car that weighs 20,000 lb is traveling eastward with a velocity whose magni-...
4. A railroad car that weighs 20,000 lb is traveling eastward with a velocity whose magni- tude is 5 fps. A second car, on the same track, that weighs 40,000 lb is also traveling in an easterly direction with a velocity of 7.81 fps. When the cars collided, they became coupled together and then both cars moved with the same velocity. If friction between the cars and the rails is neglected, what were the magnitude and the direc- tion of...
A 10, 000 kg railroad car is rolling on a horizontal railroad track at 1.20 m/s....
A 10, 000 kg railroad car is rolling on a horizontal railroad track at 1.20 m/s. The 10,000 kg car hits an 18,000 kg car, which is initially at rest, and the cars lock together. What is the final velocity of the coupled cars just after they lock together?
A 12,000 kg railroad car, initially traveling at 1.6 m/s, strikes three identical and connected railroad...
A 12,000 kg railroad car, initially traveling at 1.6 m/s, strikes three identical and connected railroad cars, initially at rest. The track is horizontal and frictionless. After the collision, all four cars move together at the same velocity. A.) Determine the final speed of the cars. (0.4 m/s). B.) Assuming the collision took 1.5 seconds, calculate the average force of collision. C.) How much non-conservative work was done during the collision? (-11500 J)
Could I get some help on these 3 questions please, thank you! 5A railroad freight car,...
Could I get some help on these 3 questions please, thank
you!
5A railroad freight car, mass 15000 kg. is allowed to coast along a level track at a speed of S m's It collides and couples wit 3 50,000 kg loaded second car, initially at rest and with brakes released What percentage of the initial kinetic energy in the 15000 kg car is preserved in the two coupled cars after collision? A)30% B) 12% C)60% D) 563% E)23.1% respectively...
A railroad car of mass 2.42 × 104 kg is moving with a speed of 3.84 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an initial speed of1.92 m/s.
A railroad car of mass 2.42 × 104 kg is moving with a speed of 3.84 m/s. It collides and couples with three other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an initial speed of1.92 m/s.(a) What is the speed of the four cars after the collision?____ m/s(b) How much mechanical energy is lost in the collision?______J
Question 3 A 20-Mg railroad car moving at 4 km/h is to be coupled to a 40-Mg car which is at rest with locked wheels (HK = 0.30) as shown in Fig. 3. Determine (a) the velocity of both cars after the coupling is completed, and (b) the time it takes for both cars to come to a rest. 4 km/h 40 mg 20 mg SR ) Fig. 3
4. A railroad car that weighs 20,000 lb is traveling eastward with a velocity whose magni- tude is 5 fps. A second car, on the same track, that weighs 40,000 lb is also traveling in an easterly direction with a velocity of 7.81 fps. When the cars collided, they became coupled together and then both cars moved with the same velocity. If friction between the cars and the rails is neglected, what were the magnitude and the direc- tion of...
Could I get some help on these 3 questions please, thank
you!
5A railroad freight car, mass 15000 kg. is allowed to coast along a level track at a speed of S m's It collides and couples wit 3 50,000 kg loaded second car, initially at rest and with brakes released What percentage of the initial kinetic energy in the 15000 kg car is preserved in the two coupled cars after collision? A)30% B) 12% C)60% D) 563% E)23.1% respectively...
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