What is the acceleration of g

9. On a farm, you pull a 4.3 kg bucket of water up from a well with a force of 55.2 N while a 5N frictional force acts in the opposite direction. Calculate the upward acceleration of the bucket in m/s2

E10. What is the weight of a 40-kg mass?

13) Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 67.0 N, the second a force of 92.0 N, friction is 22.0 N, and the mass of the third child plus wagon is 23.0 kg.  What would the acceleration be (in m/s2) if friction were 25.0 N? (Enter the magnitude.)  _____m/s2