Physics Unit 1 Week 1 Linear Motion

Speed

How fast an object changes its location.

Velocity

the speed and direction of a moving object

Acceleration

the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change.

Distance equation

d\=vt

Acceleration equation

change in velocity/time.

Average speed

total distance divided by total time

Vector Characteristics

A vector has both magnitude and direction

Of speed, velocity and acceleration which is/are vectors

Velocity and acceleration

Change in Velocity

To change speed, change direction or both.

Terminal velocity definition

the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity

Air resistance

force that opposes the motion of objects that move through the air

Gravity (g)

acceleration of objects toward the center of mass (10 m/s2 on Earth)

Instantaneous speed

the speed of an object at one instant of time

graph of Velocity vs. Time

The slope is accelleration