Chapter 2: Kinematics in One Direction

Kinematics

Kinematics

study of motion without reference to forces

Dynamics

study on the effects forces have on motion

Mechanics

branch of physics that studies motion based on kinematics and dynamics

Displacement

________ is a vector that accounts for both distance (between initial and final positions) and direction measured in meters (m).

Direction

Distance is the total movement of an object without regards to ________.

Not equal

Displacement does ________ displacement because displacement measures the shortest distance between the start and end point while distance measures the total length traveled.

Speed

________ only indicates how fast an object is moving.

Displacement

Average velocity = ________ / time

Instantaneous

________ velocity indicates how fast and in what direction an object moves at a certain instant of time.

Magnitude

Instantaneous speed is the ________ of instantaneous velocity.

meters per second squared

Acceleration is a vector of the rate of change of velocity over time measured in ________ (write it out in words).

Decelerates

An object ________ whenever the acceleration and velocity vectors point in opposite directions, causing the object to slow down.

Drawing

The first step in solving a kinematics problem is making a ________. This will help you visualize the motion and make sense of any positives or negatives.

Other data

If you do not have at least 3 variables of kinematics, what should you do?

You should solve for a missing variable using ________ given in the question.

Air resistance, downwards

Separate your answers with a comma and a space.

An object is in free fall if it does not encounter any ________ and accelerates ________ at a constant rate.

9.8

Near Earth’s surface, the magnitude of acceleration due to gravity is roughly _______ meters per second squared.

Time

________ symmetry of freely falling bodies states an object will take the same amount of time to go up as down.

Speed

________ symmetry of freely falling bodies states an object falling down travels at the same speed it would have going up at the same height.

Linear

On a position vs. time graph, the slope of a ________ graph is equal to velocity.

Velocity

On a _______ vs. time graph, the slope is acceleration.

Area under the curve

On a velocity vs. time graph, the _______ is equal to position.