Forces and Motion Review

A force is a push or pull acting upon an object.

Speed = Distance / Time.

Gravity is the force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Friction opposes the motion of an object, slowing it down or preventing it from moving.

Inertia is the tendency of an object to resist changes in its state of motion.

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

The net force determines the acceleration of an object according to Newton's second law (F=ma).

For every action, there is an equal and opposite reaction (Newton's third law of motion).

A balanced force does not change the motion of an object; it remains at rest or continues to move at a constant speed.

An unbalanced force causes an object to accelerate, changing its velocity.