Force & Motion Vocab

Front

What is speed in a given direction?

Back

Velocity

Front

What do we call equal forces acting on an object in opposite directions?

Back

Balanced forces

Front

What is the force that one surface exerts on another when the two surfaces rub against each other?

Back

Friction

Front

What type of friction occurs when an object rolls over a surface?

Back

Rolling friction

Front

What are forces that produce a nonzero net force, which changes an object's motion?

Back

Unbalanced forces

Front

What is the tendency of an object to resist changes in its state of motion?

Back

Inertia

Front

What is the force of attraction between two masses?

Back

Gravity

Front

What is the rate of change of velocity?

Back

Acceleration

Front

What is the product of an object's mass and its velocity?

Back

Momentum

Front

What is the force that opposes the motion of an object through a fluid?

Back

Fluid friction