Ap Physics 1 1.1-1.4

What is a system in physics?

A defined object or group of objects that is being studied.

What is a reference frame?

A coordinate system and a clock used to describe the motion of an object. Motion is always relative to a chosen reference frame.

What is distance?

A scalar quantity that refers to how much ground an object has covered during its motion. It only has magnitude.

What is displacement?

A vector quantity that refers to an object's overall change in position. It has both magnitude and direction.

What is a system in physics?

A defined object or group of objects that is being studied.

What is a reference frame?

A coordinate system and a clock used to describe the motion of an object. Motion is always relative to a chosen reference frame.

What is distance?

A scalar quantity that refers to how much ground an object has covered during its motion. It only has magnitude.

What is speed?

A scalar quantity that refers to how fast an object is moving. It is the distance traveled per unit of time (speed = \frac{distance}{time}).

What is velocity?

A vector quantity that refers to the rate at which an object changes its position. It has both magnitude (speed) and direction (velocity = \frac{displacement}{time}).

What is displacement?

A vector quantity that refers to an object's overall change in position. It has both magnitude and direction.

What is acceleration?

A vector quantity that refers to the rate at which velocity changes over time (acceleration = \frac{\Delta velocity}{\Delta time}).