Jon recently drove to visit his parents who live 648 miles away. on his way there his average speed was 14 miles per hour faster than on his way home (he ran into some bad weather). if jon spent a total of 27 hours driving, find the two rates (in mph). round your answer to two decimal places, if needed.

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.