Because it is bad for your body and health!
The object is in free fall, so its velocity follows the law:
where
is the initial velocity (zero)
g is the gravitational acceleration
t is the time
Since the initial velocity is zero, the velocity after t=30 s is
Answer:
I think its C sorry if it's wrong
Light year is the distance traveled by light in 1 year of time interval
so here we can say that the statement must have used the word light year as the distance
so we have
A) It's about 4 light-years from here to Alpha Century.
this shows the distance between two so it is correct
B) It will take me light-years to complete this homework assignment.
here it represent the light year as time so it is INCORRECT
C) A light-year is about 10 trillion kilometers.
This shows the distance so it is correct
D) It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year.
It shows the distance so it is correct
E) The Milky Way Galaxy is about 100,000 light-years in diameter.
this is distance so it is also correct