Physics Forces Practice Test

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact. It can slow down or stop the movement of objects.

Front

How does friction affect speed?

Back

More friction decreases speed.

Front

What happens to an object's velocity as it falls freely under gravity?

Back

The object's velocity increases as it falls.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is the net force acting on an object?

Back

The net force is the vector sum of all the forces acting on an object.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, such as the Earth and an object.

Front

What is the relationship between net force and acceleration?

Back

Acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass (Newton's Second Law).

Front

What is the role of normal force?

Back

Normal force is the support force exerted upon an object that is in contact with a surface, acting perpendicular to the surface.

Front

What is the effect of mass on friction?

Back

The amount of friction depends on the weight (mass) of the objects pressing together.

Front

What is tension force?

Back

Tension force is the force transmitted through a string, rope, or cable when it is pulled tight by forces acting from opposite ends.