a roller derby exhibition recently came to town. they packed the gym for two
consecutive weekend nights at south's field house. on saturday evening, the
68-kg anna mosity was moving at 17 m/s when she collided with 76-kg sandra
day o'klobber who was moving forward at 12 m/s and directly in anna's path.
anna jumped onto sandra's back and the two continued moving together at
the same speed. determine their speed immediately after the collision.

14.36m/s

Explanation:

From the law of conservation of linear momentum

m1u1 + m2u2 = v(m1 + m2)

68×17 + 76×12= v(68+76)

1156+912 = 144v

2068 = 144v

v = 2068/144

=14.36 m/s

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!

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