PLEASEE HELP<33 A hockey puck slides across a frozen lake at 30.0° east of north for 42 ft before being passed 28 ft to the east. What is the displacement of the puck?

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.