Review Q #2

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined. It determines the object's motion.

Front

What happens to gravitational potential energy (GPE) as mass increases?

Back

The gravitational potential energy of an object increases with its mass and height relative to the Earth.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two objects due to their mass. On Earth, it pulls objects toward the center.

Front

At what point does an object have the most gravitational potential energy when thrown into the air?

Back

An object has the most gravitational potential energy at its highest point.

Front

What is the relationship between force and motion?

Back

Force causes an object to move or change its motion. The greater the force, the greater the change in motion.

Front

What is the principle of action and reaction?

Back

For every action, there is an equal and opposite reaction. This means that forces always come in pairs.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.

Front

How does height affect gravitational potential energy?

Back

Gravitational potential energy increases as the height of an object above the ground increases.

Front

What is the formula for calculating gravitational potential energy?

Back

GPE = mass × gravity × height (GPE = mgh).

Front

What is the role of water resistance when paddling a boat?

Back

Water resistance pushes back against the paddle, allowing the person to move forward due to the action-reaction principle.