Unit 2 & Unit 3 Terms

Weight

A measure of the force of gravity on an object, expressed as mass of the object times acceleration due to gravity.

Vector

A number (rate) with a direction; a quantity that has both magnitude and direction (measurable amount)

Magnitude

A numerical quantity, expressed by standard unit/s of measurement.

Force

A push or pull; any quantity that produces, or is capable of producing, motion.

Speed

A rate at which an object changes position.

Deceleration

Acceleration in the opposite direction as the velocity of the object, results in speed decreasing.

Inertia

An object's resistance to change in motion.

What is the difference between speed and velocity?

Direction is the difference. Speed is how fast an object changes position. Velocity is speed with direction.

Gravitational

Force of attraction between all masses in the universe.

Gravity

Force of attraction between all masses in the universe.

Friction

Force of resistance acting between objects in contact and tending to dampen their motion.

The center

Seeking gravitational effect that causes an object to travel in a circle.

Acceleration Formula

(velocity 2 - velocity 1)/time

Speed

How fast an object changes position or the rate at which an object changes position.

Electromagnetism

Properties and interactions if objects with electric and magnetic fields.

Net Force

Refers to the application of more than one force on an object an, therefore, the combined effect (sum of forces) on its motion.

Velocity

Speed with direction or the rate at which an object changes position when traveling in a certain direction, expressed as a rate: the distance an object traveled from one position to the next divided by the time it took to travel the distance.

Mass

The amount of matter an object is made up of and the measure of the amount of inertia (resistance to change in momentum) the object has measured in grams.

Acceleration

The change of velocity over time.

Electromagnetic Force

The force between charged particles. Attractive or repulsive force acting between charged particles.

Newton's

The unit force in the metric system; it is derived from mass and acceleration (speed over time in a direction).

Velocity Formula

distance/time