A car of mass m moving at a speed v, collides and couples with the back of a truck of mass 2m moving initially in the same direction as the car at a lower speed v,. (a) What is the speed v, of the two vehicles immediately after the collision? (Use any variable or symbol stated above as necessary.) VE= (b) What is the change in kinetic energy of the car-truck system in the collision? (Use any variable or symbol stated above as necessary.) AKE =

A block of mass m travels with speed v0 to the right ona horizontal surface with negligible friction toward a sphereof mass 2m hanging at rest from a light cord, as shown above.The block collides elastically with the sphere. Which of thefollowing correctly describes the speed and direction of theblock and the speed of the sphere a short time after thecollision? Group of answer choices block: v0/3 to the left, sphere: slightly less than 2 v0/3 block: v0/3 to the right, sphere: slightly less than 2 v0/3 block: v0 to the left, sphere: zero block: zero, sphere: slightly less than v0

A stone is dropped at t = 0. A second stone, with 3 times the mass of the first, is dropped from the same point at t=130 ms. (a) How far below the release point is the center of mass of the two stones at t = 260 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass of the two-stone system moving at that time? (a) Number (b) Number eTextbook and Media Units Units

A stone is dropped at t = 0. A second stone, with 4 times the mass of the first, is dropped from the same point at t = 55 ms. (a) How far below the release point is the center of mass of the two stones at t = 500 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass of the two-stone system moving at that time? (a) Number Units (b) Number i Units >