Force and Motion

Front

What is force?

Back

A force is a push or pull that can cause an object to move, change direction, or change speed.

Front

What is motion?

Back

Motion is the change in position of an object over time.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. Objects with greater mass have more inertia.

Front

What is mass?

Back

Mass is the amount of matter in an object, usually measured in kilograms.

Front

What is the relationship between mass and force?

Back

More force is needed to move an object with greater mass.

Front

What are unbalanced forces?

Back

Unbalanced forces are forces that cause an object to change its motion. The net force acting on the object is not zero.

Front

What are balanced forces?

Back

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

Front

What is net force?

Back

Net force is the total force acting on an object after all the forces are combined.

Front

What happens when an object is acted upon by unbalanced forces?

Back

The object will accelerate in the direction of the net force.

Front

What is the effect of friction on motion?

Back

Friction is a force that opposes motion between two surfaces in contact.