Force and Motion

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion, either by starting to move, stopping, or changing direction.

Front

State Newton's First Law of Motion.

Back

An object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the greater its inertia.

Front

Explain Newton's Second Law of Motion.

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is the reaction force when a person jumps off a diving board?

Back

The reaction force is the diving board pushing the person upward as they push down on it.

Front

Define balanced forces.

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion of the object.

Front

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

Back

When the net force is zero, the object remains at rest or continues to move at a constant velocity.

Front

What is the role of friction in motion?

Back

Friction is a force that opposes the motion of an object, acting in the opposite direction to the movement.

Front

Describe how mass affects acceleration according to Newton's Second Law.

Back

According to Newton's Second Law, as mass increases, acceleration decreases for a given force; heavier objects require more force to accelerate.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = ma, where F is force, m is mass, and a is acceleration.