Question

7. A small stone is thrown horizontally from a balcony 25 m above the ground. The stone leaves the hand at a speed of 11 m / s How far away (horizontally) does the stone fall down? We ignore the air resistance.

Answer 1

The equation of motion of a projectile is given by
   
And
  
So, the projectile will fall down at a position given by
  
   

As time can't be negative, so, we choose the positive root to be the time at which the projectile will fall down. And so, the horizontal distance travelled at that time is
  
Now putting the given values,
   
we get