Answer:3.67 s
Explanation:
Given
Ball is thrown with an initial velocity of 
As the ball moves upward it experience a declaration due to gravity which will slow down the ball
using

where v=final velocity
u=initial velocity
a=acceleration
t=time
Here 



Answer:
Your answer should be B. Cooled air
Explanation:
So you would divide 1530 by 8 and that’s how you’d get your answer, so it should be (blank)m
1 atom of Mg(Magnesium) and 2 atoms of Br(Bromine)