A graph titled Position versus time for 2 runners with horizontal axis time (seconds) and vertical axis position (meters). An orange line labeled A has a greater upward slope than a blue line B with A ending above B.
Use the graph to complete the sentences about two runners.

Runner
is faster than Runner
.

Runner
has a head start.

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.