Chieffy Caligdong of the Philippine Azkals kicked a football with an initial velocity of 20.0 m/s at an angle of 60*. Hint: Assume that the ball lands at the same height as its starting position.

a. How long did the ball stay in the air?

b. What are the range and maximum height of the ball?

Helllppp meee master▼・ᴥ・▼

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

the answer would be b i believe