Astudent drops a rock from a bridge to the water 12.7 m below. with what speed does the rock strike the water? the acceleration of gravity is 9.8 m/s 2

The rock strike the water with the speed of 15.78 m/sec.

The speed by which rock hit the water is calculated by the formula

v=

v=

v=15.78 m/sec

Hence, the rock strike the water with the speed of 15.78 m/sec.

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

f=ma newton

f=100x2.5=250n