Question

A woman is pushing a 38.7 kg lawnmower, initially at rest, with a 68.7 N forward force, against friction. The lawnmower speeds up. The lawnmower speed is:
a) 1.77 m/s²
b) 1.78 m/s²
c) 1.79 m/s²
d) 1.80 m/s²