Three identical train cars, coupled together are rolling east at 2.0 m/s. A fourth car traveling east at 4.0 m/s c...
help, please. 12 Instructions: Show your starting equations and show essential steps of subsequent work. Enclose final answer(s) in a box. Score: points 1. [6] Three identical train cars (mass m), coupled together, are rolling east at speed vo. A fourth car (also mass m) traveling east at 4vo catches up with the three and couples to make a four-car train. A moment later, the train cars hit a fifth car (mass 2m) moving at a velocity of vo to...
1- A block slides along a frictionless surface at 2.4 m/s. A second 3.5-kg block, sliding at a faster 7.5 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 4.6 m/s. What was the mass of the first block? 2-A 15 g ball of clay traveling west at 4 m/s collides with a 50 g ball of clay traveling 30° north of east at 3.5 m/s. What is the speed...
A railroad tank car rolls on a track at 3.45 m/s toward two identical coupled tank cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of each is 2.10 ✕ 104 kg. (a) What is the speed (in m/s) of the three coupled cars after the first couples with the other two? (Round your answer to at least two...
Two cars are latched together with a speed of 3 m/s traveling to the east when they catch up and collide with another car moving at a speed of 0.6m/s east. If the three-car latches to the other two. How fast will the three cars joint together after the collision happens? Same Mass for all vehicles.
2. A railroad boxcar rolls on a track at 3.10 m/s toward two identical coupled boxcars, which are rolling in the same direction as the first, but a speed of 1.60 m/s. The first reaches the second two and all couples together. The mass of each is 4.65 x 104kg. (a) Present the physical principle in mathematical form and use it to determine the speed of the three coupled cars after the first couples with the other two. (b) Determine...
Two coupled boxcars are rolling along at 4.0 m/s when they collide with and couple to a third, stationary boxcar. What is the final speed of the three coupled boxcars? What fraction of the cars' initial kinetic energy is transformed into thermal energy?
12. A 1500-kg car traveling at 30 m/s east collides with a 3000-kg car traveling at 20 m/s south. The two cars stick together after the collision. What is the speed of the cars after collision?
1. A 12,000 kg railroad car, intially 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)
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)
A 900 Kg car is traveling east at 15 m/s when it collides with a 750 Kg car traveling north at 20 m/s. The cars stick together. What is the kinetic energy of the system after the collision?