O) a stone is dropped into a deep well and is heard to hit the water 3.41 s after being dropsed. if the
stone accelerates with a rate of -9.8m/s determine the depth of the well.

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.