Forces and Motion

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 an unbalanced force?

Back

An unbalanced force occurs when two forces acting on an object are not equal, causing the object to accelerate in the direction of the greater force.

Front

What happens when forces are equal and opposite?

Back

When forces are equal and opposite, they cancel each other out, resulting in no movement of the object.

Front

Define net force.

Back

Net force is the overall force acting on an object when all the individual forces are combined.

Front

How do you calculate net force?

Back

To calculate net force, add all the forces acting in one direction and subtract the forces acting in the opposite direction.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What is gravity?

Back

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

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 an unbalanced force.

Front

What is the relationship between mass and force?

Back

The greater the mass of an object, the greater the force needed to accelerate it, as described by Newton's second law (F=ma).

Front

What is friction?

Back

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