Suppose you are standing such that a 35-foot tree is directly between you and the sun. if you are 7 feet tall and the tree casts a 75-foot shadow, how far away from the tree can you stand and still be completely in the shadow of the tree?

60 ft

Explanation:

The tree man and their shadow system forms two similar right angle triangles.

the figure is in the attachment.

let ∠BAC= θ

Therefore, in triangle ABC

tanθ = BC/AC= 35/75= 7/15

now in ΔAEF also

tanθ = EF/AE = 7/75-x= 7/15

solving we get x=60 ft

Now AC and FA are the shadows of the tree and the man respectively.

now FA =75-x=75-60= 15 ft

Therefore, the man must stand at a distance of 60 ft from the tree can you stand and still be completely in the shadow of the tree

f=ma newton

f=100x2.5=250n