In the picture at left. the launch height is 10m ball b mass 5kg has a launch velocity of 12 m/s and ball a mass 8 kg has a launch velocity twice that determine the time in flight for both the range for each and explain why the difference is masses is not considered

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.