Two cars of equal mass collide inelastically and stick together after the collision. before the collision, their speeds are v1 and v2 . what is the speed of the two-car system after the collision?
a) v1+v2
b) v1-v2
c) v2-v1
d)(v1v2)^(1/2)
e) (1/2)(v1+v2)
f)(v1+v2)^(1/2)
g)the answer depends on the directions in which the cars were moving before the collision.

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.