A 200 kg car is moving rightward at 3 m/s. What speed should a leftward moving 300 kg car have so that the two collide and come to a stop? (​Set the Blue bumper car mass to 200 kg and velocity to +3 m/s. Set the Red bumper car mass to 300 kg and the bumper type to Locking. Adjust the Red car velocity so that the two come to a stop after they collide).

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).