A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 2.75 m above the level of the saddle.

(a) What must be the horizontal distance between the saddle and limb when the man makes his move?
m

(b) How long is he in the air?
s

1 answer

for (b) he's in the air for 0.7s

s=Ut+0.5at^2
2.4=0t+0.5(9.8)(t^2)
t=0.7