net force acting along x axis
Fx = 1.6 - 4.7 - 45 = - 48.1 N
net force acting along y axis
Fy = 1.6 - 3.3 - 43 = - 44.7 N
net force
F^2 = Fx^2 + Fy^2
F = 65.66 N
============
a)
Direction of Acceleration
phi = 180 + arctan ( 44.7/ 48.1)
phi = 222.9 ccw from +x axis
=========
b)
F = ma
m = F/a = 65.66/ 3.55 = 18.5 kg
========
c)
Vx = ( Fx/ m) t = - 48.1/ 18.5 * 19 = - 49.41 m/s
Vy = ( Fy/m) t = - 44.7/18.5 *19 = - 45.91 m/s
net velocity
V^2 = Vx^2 + Vy^2
V = 67.45 m/s
=========
d)
V = - 49.41 i + ( - 45.91) j
========
do comment in case any doubt, will reply for sure . Goodluck
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