16. The temperature of water in a swimming pool decreases by 5.0 K during the night. The mass of the water in the pool is 560,000 kg. How much heat
does the water lose? The specific heat capacity of water is 4,190 J/kgK. *

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.