9)
Tommy was walking at a rate of 4
miles
hour
at noon and at 12:30 pm he was walking at a brisk rate of 6
miles
hour
. Two hours later Tommy was walking at a leisurely rate of 2
miles
hour
. Which statement about Tommy's accleration is true?
A) Tommy had an accleration of zero the entire time.
B) Tommy had a positive acceleration between noon and 12:30 pm.
C) Tommy had a positive acceleration between 12:30 and 2:30 pm.
D) Tommy had a negative acceleration between noon and 12:30 pm.
At 12 Tommy was walking at 4 mph, then at 12:30 he was walking at 6 mph. He went from 4 to 6 which on a graph would go up, therefore a positive acceleration
