Use the following graph and table to answer the questions

Acceleration (m/ s"2) Y axis 0.21 0.20 0.18 0.17 0.16 0.15 0.14 1. According to the graph above, which corresponds to the case of an object a. constant net force b. constant velocity c. constant acceleration cl. constant total mass e. it's not possible to answer 2. Using metric system units (mks), write the value of the slope, to four decimal places. 3. What physical quantity does the slope represent