7. a pool cue ball moving at 2.1 m/s east collides in a straight line with the eight ball at rest. find the velocity of the eight ball after the collision if momentum is conserved and
a. the cue ball stops. (5 points)
b. the cue ball continues on in the same direction at 0.10 m/s. (5 points)
c. the cue ball continues on in the same direction at 0.70 m/s. (5 points)

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!