Forces Test Review

Front

What are balanced forces?

Back

Balanced forces are two or more forces acting on an object that cancel each other out, resulting in no change in motion. Example: A tire swing hanging motionless from a tree.

Front

What is thrust?

Back

Thrust is a force that pushes an object forward. It is the opposite of drag, which pulls an object backward.

Front

What determines the amount of friction?

Back

The amount of friction is determined by the force applied and the roughness of the surfaces in contact.

Front

How does adding sand to ice affect friction?

Back

Adding sand to ice increases friction, making it easier to walk or drive on the surface.

Front

What is lift?

Back

Lift is an upward force that opposes the weight of an object, allowing it to rise. It is crucial in flight.

Front

What is drag?

Back

Drag is a backward force that opposes the forward motion of an object, such as air resistance.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the Earth pulling objects toward its center.

Front

What is the relationship between thrust and gravity?

Back

Thrust is to forward motion as gravity is to downward motion.

Front

What happens when you apply more force to an object on a rough surface?

Back

Applying more force increases the friction between the surfaces, making it harder to move.

Front

What is the effect of lubricating surfaces?

Back

Lubricating surfaces with oil decreases friction, making it easier for objects to slide over each other.