Final Review 3 - Gravity and Friction

Front

What is the force that pulls objects towards each other?

Back

Gravity is the force that attracts two bodies towards each other.

Front

What is the measure of the force of gravity on an object called?

Back

Weight is the measure of the gravitational force acting on an object.

Front

How can friction be reduced?

Back

Friction can be reduced by using lubricants or by reducing the surface area in contact.

Front

Which model has greater gravitational attraction if both are the same distance from each other?

Back

The model with greater mass will have greater gravitational attraction.

Front

What does the length of an arrow represent in a force diagram?

Back

The length of the arrow represents the strength of the force.

Front

What is the relationship between mass and weight?

Back

Weight is the product of mass and the acceleration due to gravity (Weight = Mass x Gravity).

Front

What is friction?

Back

Friction is the force that opposes the motion of an object in contact with another surface.

Front

What factors affect the amount of friction between two surfaces?

Back

The amount of friction depends on the nature of the surfaces in contact and the force pressing them together.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.