Which graph shows the change in velocity of an object in free fall? Velocity (m/s)
Time (s)
Velocity (m/s)
O B.
Time (s)
Velocity (m/s)
Time (s)
Velocity (m/s)
Time (s)

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.