Arock is dropped from a bridge. what happens to the magnitude of the acceleration and the speed of the rock as it falls?

From the moment the rock is released until the moment it plops into
the rapids below, its acceleration is constant.  The magnitude of the
acceleration is unique to the planet on which the rock is dropped,
and points toward the center of the planet.  On Earth, the magnitude
is about 9.81 m/s² .

Since the size of the acceleration is not zero, that tells us right away
that the speed of the rock grows steadily as it falls.

The answer is b hope this

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).