An archer shoots an arrow horizontally at a target 15 m away. the arrow is aimed directly at the center of the target, but it hits 52 cm lower. what was the initial speed of the arrow?

The speed was not exceeded so it was slow

Ihave no idea sorry

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.