Question

explain why some of the leaves may get detached from a tree if we vigorously shake its branches

Answer 1

Thanks for your question !  According to the Newton 's thurd law, Which states that - "For every action, there is a equal opposite action".  And thus, When we shake the trees, they get a certain tendancy to be in rest. As they are in rest, some of their leaves get detached...

Answer 2

Question :

explain why some of the leaves may get detached from a tree if we vigorously shake its branches.

Answer :

When we shake the branches some of the leaves may get detached from the tree because of inertia of rest .

The leaves tends to be at rest but as we produce motion in the tree , they come to motion.

That's why some of the from a tree if we vigorously shake its branches.