Key Terms

Key Terms

acceleration due to gravity
acceleration of an object that is subject only to the force of gravity; near Earth’s surface this acceleration is 9.80 m/s2
average acceleration
change in velocity divided by the time interval over which it changed
constant acceleration
acceleration that does not change with respect to time
instantaneous acceleration
rate of change of velocity at a specific instant in time
kinematic equations
the five equations that describe motion in terms of time, displacement, velocity, and acceleration
negative acceleration
acceleration in the negative direction