Katie pulls her wagon by the handle. She exerts a force of 60 N 30 degrees above the
horizontal. The force of friction from the sidewalk on the wagon is 30 N. The wagon has
a mass of 20 kg. What is the acceleration of the wagon?
a. 1.1 m/s²
b. 21.96 m/s²
c. 0 m/s²
d. 1.5m/s²