Ch. 1 Concepts Of Motion Flashcards
The change of an object’s position with time.
Motion
What are the four types of motion?
- Linear
- Circular
- Projectile
- Rotational
Linear, circular, and projectile motion—in which the object moves through space are called?
Translational motion
The path along which the object moves, whether straight or curved, is called the object’s:
Trajectory
An image, showing an object’s position at several equally spaced instants of time is called a:
Motion diagram
A highly simplified picture of reality, but one that still captures the essence of what we want to study is a:
Model
An object that can be represented as a mass at a single point in space is called a:
Particle
A simplification in which we treat a moving object as if all of its mass were concentrated at a single point
Particle model
An arrow from the origin to the point representing an object is called a:
Position vector
A single number (with a unit) that describes a physical quantity is called a:
Scalar
A quantity having both a size and a direction is called a:
Vector
The size or length of a vector is called its:
Magnitude
The vector showing the position changes of an object are called:
Displacement
The displacement of a vector from an initial position to a final position is:
Delta_r=r_f-r_i
Total distance divided by time interval spent traveling.
Average speed
