Why do stars rise 4 minutes earlier each night? a. bc the earth had moved in its orbit
b. bc the sun's motion in the milky way
c. bc the earth's rotation is constantly slowing by 4 min

c. bc the earth's rotation is constantly slowing by 4 min.

Explanation:

That is answer

ek = (m.v2) / 2

v - velocity of system after the collision

m = m1 + m2

ek = (m1 + m2) v2/2

ek = (200 + 250) 2,32/2 = 450*5,29/2 = 1190,25 j

by: nicholas dooley