Find point G on segment AB such that the ratio of AG to GB is 3:2

The distance between the points P(4,1,0) and Q(3,5,2) is:

Name one point that is not collinear

A projectile was fired from level ground and just cleared a wall that is 10 m high and 20 m from the point of projection. If the angle of projection was 36°, find the initial speed of the projectile in m/s correct to the nearest integer.