Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

True or False: A balanced force means an object is not moving.

Back

False. A balanced force means that the object may be at rest or moving at a constant speed.

Front

What happens to an object with greater inertia when a force is applied?

Back

An object with greater inertia will resist changes to its motion more than an object with less inertia.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when two forces acting on an object are not equal, resulting in a change in motion.

Front

Example of balanced forces: Two ice skaters moving in a straight line at a constant speed. What does this indicate?

Back

This indicates that the forces acting on the skaters are balanced, resulting in no acceleration.

Front

Example of unbalanced forces: A car accelerating when the driver presses the gas pedal. What does this indicate?

Back

This indicates that the forces acting on the car are unbalanced, resulting in acceleration.

Front

What is the relationship between mass and inertia?

Back

The greater the mass of an object, the greater its inertia. Heavier objects require more force to change their motion.

Front

What does it mean when we say an object is at rest?

Back

An object is at rest when it is not changing its position relative to a reference point.

Front

What is the effect of friction on motion?

Back

Friction is a force that opposes motion between two surfaces in contact, which can slow down or stop moving objects.