Kinematic equations

Science

Definition

A set of equations that describe the motion of objects moving with constant acceleration, relating displacement, velocity, acceleration, and time. They are the foundation for solving most one-dimensional motion problems in physics.

Examples

  • Calculating how far a car travels while braking to a stop
  • Finding the time it takes a dropped ball to hit the ground
  • Determining the launch speed needed for a plane to take off within a runway length
Key Fact

v = v₀ + at; x = v₀t + ½at²; v² = v₀² + 2ax; x = ½(v + v₀)t

Related Terms

Acceleration Displacement and velocity Projectile motion Motion graphs

Study This Concept

Practice kinematic equations with free review games in these units:

AP Physics 1 Unit 1: Kinematics