Question

A man can throw a stone to a maximum distance of 80 m. The maximum height to which it will rise in metre, is

Answer 1

Here we make use of the formula which gives a relationship between maximum range, maximum height and angle of projection of a projectile.

The relation is as follows:

R/H=4/(Tan(angle of projection))

So, for maximum range the angle has to be 45° and therefore plugging in the values we get:

H= 20m

Hope this helps.