Free fall occurs when gravity is the only force acting on a body. Objects can be in free fall even when moving upwards or at rest. Weightlessness occurs when there are no other forces acting
Physics motion includes translational, rotational, and vibrational types. Motion must occur along a straight line. Position is the location of an object relative to a reference point. Displacement is the change in position over time
Free fall describes motion of objects falling in gravitational field. All objects fall with same constant acceleration g=9.81 m/s² on Earth. Gravity causes objects to fall toward Earth's center. Motion is one-dimensional with vertical velocity
Free falling occurs when only gravity acts on an object. Objects fall in vacuum without experiencing air resistance. Gravitational acceleration is 9.8 m/s² towards Earth. Weight equals gravitational force (W=mg)
Mechanics investigates body motion, divided into kinematics and dynamics. Displacement is the change in position, represented by vector quantity. Time is measured in seconds, and motion requires both position and time
Lesson 6 introduces four kinematic equations for one-dimensional motion. Students practice using strategy with sample problems. Problems cover various motion scenarios including free fall and acceleration