Acar (mass = 1150 kg) is traveling at 34.9 m/s when it collides head-on with a sport utility vehicle (mass = 2560 kg) traveling in the opposite direction. in the collision, the two vehicles come to a halt. at what speed was the sport utility vehicle traveling?

By momentum conservation we can say that if finally both vehicles are coming to halt then final momentum will be zero.

now by momentum conservation we can say

So it will move in opposite direction with speed 15.7 m/s speed.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.