Glen found three brands of earbuds that have the specifications he wants. The three pairs of earbuds looked a bit different from each other, but Glen knew they would perform similarly. Still, each company offered its earbuds at a different price. What economic concept does this situation represent?.

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.