At a construction site a pipe wrench struck the ground with a speed of 23 m/s. (a) from what height was it inadvertently dropped? (b)how long was it falling?

26.96 m,2.34 s

Explanation:

Given

Wrench hit the ground with a speed of 23 m/s

Applying equation of motion

Here u=0 because it is dropped from a height of S m

Time required by wrench to hit the ground

v=u+at

the answer is b

explanation:

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: