A 40000 kg freight car is coasting at a speed of 5.0 m/s along a straight...
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
Show all work 1. A 400 g air car coasting at speed 5m/s strikes a stationary 300 g air car and sticks to it. a) what will be their combined speed after impact? b) What percentage of the original kinetic energy is lost? 2. A 900 gram air car moving at 10 cm/s collides elastically with a stationary 100 g air car. Find the velocity of each after impact.
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%
A railroad car of 2000 kg coasting at 3.0 m/s overtakes and locks together with an identical car coasting on the same track in the same direction at 2.0 m/s. What is the speed of the cars after the lock together?
it. A 24,000 kg freight car is coasting at 0.800 m/s with negligible friction under a hopper that dumps 150,000 kg of scrap (a) What is the final velocity (in m/s) of the loaded freight car? (Enter the magnitude.) metal into m/s (b) How much kinetic energy (in J) is lost?
A 12100 kg railroad car is coasting on a level, frictionless track at a speed of 19 m/s when a 4790 kg load is dropped onto it. If the load is initially at rest, find the new speed of the car and the % change of the kinetic energy.
A 12100 kg railroad car is coasting on a level, frictionless track at a speed of 19.0 m/s when a 4790 kg load is dropped onto it. If the load is initially at rest, find the new speed of the car and the % change of the kinetic energy.
An empty freight train car of mass 10000 kg is rolling along a level of track at 2.00 m/ s . It collides with a loaded car of weight 1.96 * 10^5 n which is at rest . What is the speed of the train after the collision
A 1200 kg car is coasting on a horizontal road with a speed of 18 m/s . After passing over an unpaved, sandy stretch 35.0 m long, car's speed has decreased to 12 m/s . Part A Was the net work done on the car positive, negative, or zero? Part B Find the magnitude of the average net force on the car in the sandy section of the road. Express your answer to two significant figures and include the appropriate...
a 700 kg car is waiting at a stop light, when a 1200 kg car coasting at 4.0m/s strikes it from the rear. the cars do not stick together, nor is the collision perfectly elastic. The front car moves ahead at 5m/s after the collision. What is the speed of the rear car after the collision?