A body dropped from a tower explodes into two pieces of equal mass in midair. Which of the following is not possible? 

a) 
Each part will follow parabolic path 
b) 
Only one part will follow parabolic path 
c) 
Both parts move along a vertical line 
d) 
One part reaches the ground earlier than the other 
A body dropped from a tower explodes into two pieces of equal mass in midair. Which of the following is not possible? 

a) 
Each part will follow parabolic path 
b) 
Only one part will follow parabolic path 
c) 
Both parts move along a vertical line 
d) 
One part reaches the ground earlier than the other 
(b) If the velocities acquired due to explosions are in vertical direction,then options (c) and (d) are possible. If one of them follows parabolic path (or acquires velocity in horizontal direction), then other also has to follow parabolic path (or acquire velocity in horizontal direction to keep the momentum zero in horizontal direction). Hence, option(b) can never be possible 