turner’s treadmill starts with a velocity of
−2.7 m/s and speeds up at regular intervals
during a half-hour workout. after 33 min, the
treadmill has a velocity of −7.1 m/s.
what is the average acceleration of the
treadmill during this period?
answer in units of m/s

By definition, we have to:

Where,

vf: final speed

vo: initial speed

t: time

a: acceleration

Clearing the acceleration we have:

When replacing values we have to take into account two things:

1) Assume that the given speeds are positive

2) The time must be in seconds

The time in seconds is:

Then, replacing values we have:

The average acceleration of the treadmill during this period is:

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: