A paintball is fired horizontally from a tower 45 m above the ground. If the paintball gun fires at 90 m/s… How long does it take for the paintball to hit the ground? How far away from the tower will the paintball land?

The time taken for the paint ball to hit the ground is

The distance of the landing point from the tower is

Explanation:

From the question we are told that

   The height of the tower is

    The speed of the paintball in the horizontal direction is  

Generally from kinematic equation we have that

Here u is the initial  velocity of the paintball in the vertical direction and the value is 0 m/s , this because the ball was fired horizontally

         a is equivalent to

        t is the time taken for the paintball to hit the ground

   So    

=>    

Generally the distance of its landing position from the tower is

=>      

=>    

the correct choice is a .

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