A1000-kg car traveling at 66 m/s hits a 2000-kg car at rest and the two travel together after the collision. calculate the speed with which they move.

v = 22 m/s

Explanation:

As we know that since there is no external force on the system of two cars

so we can say that momentum of two cars will be conserved

so here we can say

so we have

so we can say that final speed of both cars will be 22 m/s

i think the answer would be b

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.