What is the defining feature of a system? a. properties that don’t change b. collision c. interaction d. gravitational force

The slope of a velocity time graph over any interval of time gives the during that interval

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius