2-99
Two cars, A
and
B, are stopped for a red light beside each other at an intersection.
The
light turns green and the cars accelerate. Their velocity time graphs
are
shown in Figure 2 44. (The positive direction is "forward.")
a) At what time(s) do A and B have the same velocity?
(b) When does B overtake A? (Hint: Their displacements must be equal
at that time and displacement can be found from a velocity time graph.)
(c) How far have the cars traveled when B overtakes A?
Correct.
At what value of t do they cross? Determine a value from the
graph before continuing.
Continue.