Which of the following is a scientific question that this data can answer?
A. Why does pressure change?
B. is the weather nice in Abilene, TX?
C. What was the highest temperature in Abilene over the four days shown?
D. Does pressure increase when the temperature rises?

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.