Motion and Force

Describing Motion

100

The state in which an objects distance to another is changing.

motion

200

A place or object used for comparison to determine if an object is in motion.

reference point

300

The length of the path between two points.

Distance

400

Let's say you are riding on a bus down the street on the way home from school.  This would be a good reference point.

Tree or building

500

This is the equation to determine the speed of an object.

s=d/t

Describing Forces

100

This is a push or a pull on an object.

Force

200

This is the overall force on an object when all forces are added together.

Net force

300

This is the force that two surfaces exert on an object when they rub against each other.

Friction

400

This is the attractive force between two objects.  

Gravity

500

If an unbalanced force is added to an object moving in the SAME direction, speed will do this.

Increase

Speed, Velocity, and Acceleration

100

This is the distance an object travels in a given unit of time.

Speed

200

This is the overall rate of speed an object travels.

Average Speed

300

This is the speed of an object at any given point in time.

Instantaneous Speed

400

This is the speed in a given direction.

Velocity

500

The RATE at which velocity changes.

Acceleration

Quiz Question

100

A motorcycle travels at 300 kilometers in 3 hours.  This is his average speed in kilometers/hour.

100 km/hr

200

On a distance-versus-time graph, this determines the speed of a moving object.

Slope

300

True or false.  On a distance-versus-time graph, it is possible for a vertical line.

False

400

The rise of a line on a distance-versus-time graph is 600 meters and the run is 2 minutes.  This is the slope, expressed in meters/minutes.

300 meters/minute

500

These three things determine the motion of an object.

Distance traveled, velocity and acceleration

Miscellaneous

100

An accelerating object can do any of these three things.

Slow down

Speed up

Change direction

200

This is how far an object travels per unit of time.

Speed of an object

300

This was the little critter Mrs. Barron found in her pantry when getting sugar and creamer for her coffee.

Translucent baby gecko

400

This is what Mrs. Barron had for lunch on this past Wednesday.

Cheese Pizza

500

Two objects are moving in a straight line.

Object A is moving 100 m/2 sec.

Object B is moving 50 m/5 sec.

40 m/sec