Chapter 2: Motion

SI unit of length

The ________ or distance is the meter (m)

Acceleration

________ occurs when an object changes its speed, its direction, or both.

Inertia

________: the tendency of an object to resist any change in its motion.

Velocity

________: includes the speed of an object and the direction of its motion.

Displacement

________: the distance and direction of an objects change in position from the starting point.

Reference Point

A(n) ________ is needed to determine the position of an object.

Slope

The ________ of a line on a distance- time graph equals the speed.

Net Force

________: When two or more forces act on an object at the same time.

Motion

________ occurs when an object changes its position relative to a reference point.

Uniform Motion

If an object is moving, it will have ________.

Horizontal Line

A(n) ________ on a distance- time graph has zero slope, and represents an object at rest.

Acceleration

________ also has direction, just as velocity does.

Acceleration

________: the rate of change of velocity.

Distance

how far an object has moved

Speed

the distance an object travels per unit of time

Average Speed

the total distance traveled divided by the total time of travel

Instantaneous Speed

the speed at a given point in time

Velocity

includes the speed of an object and the direction of its motion

Force

a push or pull

Net Force

When two or more forces act on an object at the same time

Balanced Forces

Forces on an object that are equal in size and opposite in direction

Inertia

the tendency of an object to resist any change in its motion