If this guy is really faster than a speeding bullet (v=700m/s) and he has a mass of 100kg. How much force is behind him? * A) 70000N
B) 9800N
C) 6860000N
D) We need his acceleration, not speed, to calculate this

show your work please

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.