Physics Quiz

What is static friction?

• The frictional force that opposes the initiation of motion between two surfaces in contact

• The frictional force that opposes the motion between two surfaces that are actively sliding past each other

• The attractive force that exists between all objects that have mass

• The force exerted by a surface that supports the weight of an object

What happens to static friction once the object starts moving?

• It increases

• It decreases

• It remains the same

• It becomes kinetic friction

Which force requires more force to get an object moving?

• Static friction

• Kinetic friction

• Gravity

• Normal force

What is kinetic friction?

• The frictional force that opposes the initiation of motion between two surfaces in contact

• The frictional force that opposes the motion between two surfaces that are actively sliding past each other

• The attractive force that exists between all objects that have mass

• The force exerted by a surface that supports the weight of an object

What is gravity?

• The frictional force that opposes the initiation of motion between two surfaces in contact

• The frictional force that opposes the motion between two surfaces that are actively sliding past each other

• The attractive force that exists between all objects that have mass

• The force exerted by a surface that supports the weight of an object

What determines the amount of force due to gravity?

• The mass of the object

• The distance between the objects

• The speed of the object

• The direction of the object

What is gravitational acceleration?

• The frictional force that opposes the initiation of motion between two surfaces in contact

• The frictional force that opposes the motion between two surfaces that are actively sliding past each other

• The attractive force that exists between all objects that have mass

• The acceleration experienced by all objects near the surface of a celestial body due to gravity

What is the normal force?

• The frictional force that opposes the initiation of motion between two surfaces in contact

• The frictional force that opposes the motion between two surfaces that are actively sliding past each other

• The attractive force that exists between all objects that have mass

• The force exerted by a surface that supports the weight of an object

What is the normal force equal to?

• The weight of an object

• The force exerted by a surface

• The gravitational acceleration

• The frictional force

What does the term 'normal' mean in the context of normal force?

• Parallel to

• Perpendicular to

• Opposite to

• Tangent to