Science Ch 12

When you describe how fast an object's position changes with time, you are describing the object's

• speed

• momentum

• inertia

• drag force

The description of both a train's speed and direction is called the train's

• velocity

• speed

• distance

• force

The tendency of an object to oppose a change in motion is called

• momentum

• accelerating

• friction

• gravity

A push or pull exerted by one object on another is a(n)

• force

• drag force

• friction

• momentum

The force that opposes the motion of one object sliding over another is

• friction

• force

• velocity

• gravity

The force that opposes the motion of an object through a liquid or a gas is called

• drag force

• friciton

• force

• inertia

The length between two points is

• distance

• velocity

• accelerating

• momentum

When a car's speedometer shows an increase in speed with time, the car is

• accelerating

• speed

• velocity

• gravity

To find two object's ____________, multiply its mass times its velocity

• inertia

• momentum

• friction

• speed

The force of attraction that exists between all objects with mass is

• gravity

• distance

• velocity

• friction