8th Grade PMA 2 Review

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined. It determines the object's acceleration and direction.

Front

What does it mean if an object is experiencing less friction?

Back

It means that the object can move more easily, requiring less force to maintain its motion.

Front

How do you calculate net force?

Back

Net force is calculated by adding all the forces acting on an object, taking into account their directions.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What happens to an object when the net force is zero?

Back

If the net force is zero, the object will remain at rest or continue to move at a constant speed.

Front

What does it mean if an object is stopped?

Back

It means that the object has no net force acting on it, resulting in no movement.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What is the effect of increasing friction on an object's motion?

Back

Increasing friction makes it harder for the object to move, requiring more force to overcome it.

Front

If Boy A is experiencing less friction than Boy B, who will have an easier time getting down the hill?

Back

Boy A will have an easier time getting down the hill because he is experiencing less friction.

Front

What is the relationship between net force and acceleration?

Back

Net force is directly proportional to acceleration; as net force increases, acceleration increases, according to Newton's second law (F=ma).