Motion and Forces - Key Vocabulary

The amount of matter an object is made of

• speed
• mass
• velocity
• acceleration

Speed in a given direction.

• speed
• matter
• velocity
• acceleration

The rate of change in distance.

• speed
• matter
• velocity
• acceleration

The rate of change in velocity.

• speed
• matter
• velocity
• acceleration

The product of mass and velocity of an object.

• force
• momentum
• velocity
• acceleration

The law that states the momentum before a collision will be the same as the momentum after a collision.

• force
• momentum
• velocity
• law of conservation of momentum

The pull of two objects towards each other based on mass and distance.

• force
• momentum
• gravity
• law of conservation of momentum

A push or pull.

• force
• momentum
• gravity
• law of conservation of momentum

Unit of force (kg•m/s²)

• force
• momentum
• gravity
• Newton

Sum of all forces on an object

• net force
• momentum
• gravity
• Newton