Question

Find the least initial velocity with which a projectile
is to be projected so that it clears a wall 4m height
located at a distance of 5m and strikes the
horizontal plane though the foot of the wall at a
distance 4m beyond the wall as shown in figure.
The point of projection is at the same level as the
foot of the wall. (Ans.: u = 10.2m/s)

Answer 1

Answer:

height is 4 cm

length is 6 .2 cm

l

$l \times b = 10.2$

w

$w \times b = 6.2$