Answer:
Explanation:
As is showed at the figure annexed, we can solve this problem finding the relation between the girl displacement and the shadow displacement.
Relation the triangles (see figure annexed):
We derive in order to find the speed of the shadow, because:
dx/dt: shadow's speed
dy/dt: girl's speed
Answer:
Explanation:
One example is rocks tumbling over one another, knocking off pieces from one another. This often happens in a river, desert or hillside. In chemical weathering the rock disintegrates or even dissolves because a chemical reaction changes the composition of the rock.
Answer:
Yes you are using energy to carry that thing.(Force is applied)
Explanation:
