Assume that the distance from New York to Miami is d and that half the distance is traveled at 45mph and half the distance is traveled at 55mph.
If the average velocity is given by
I'm drawing a complete disconnect between the line above and this:
I'm canceling the d from num and the denom to get
d/T=1/[0.5/45 + 0.5/55]
d/T=[45/0.5 + 55/0.5]=100/.5=200 (which I know is not the answer!).
What am I doing wrong?
Average velocity is found with different speeds over two distances. The solution is detailed and well presented. The response received a rating of "5" from the student who originally posted the question.