# Question #2f8c3

##### 1 Answer

Jan 18, 2017

A

#### Explanation:

It is a case of Horizontally Launched Projectile

Let us calculate Time of flight

It is the total time taken by the steel ball to fall through height

Using kinematic equation for free vertical fall under influence of gravity.

For

Range

Using kinematic equation

When

#=>r^2=kh# .....(1)

where#k=2u^2 /g# and is a constant

Equation (1) is a quadratic passing through origin. As it is of the form