Posted by armando on .
a ball is dropped from height of tower 300m .after 1s another ball is dropped with 20m/s from tower .when and where they meet?

physics 
bobpursley,
first ball: h=3001/2 g t^2
second ball: h= 30020(t1)1/2 g (t1)^2
set the two equations equal, and solve for t. THat is when
put t into either equation to find where.