Unit 3 Test Review Part 1: Energy

Front

What is the Second Law of Motion?

Back

The Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Formula: F = ma (Force = mass x acceleration).

Front

What is the First Law of Motion?

Back

The First Law of Motion, also known as the law of inertia, states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant speed and in a straight line unless acted upon by an unbalanced force.

Front

What is a renewable energy resource?

Back

A renewable energy resource is a source of energy that can be replenished naturally over time, such as solar power, wind energy, and hydroelectric power.

Front

What happens when unbalanced forces act on an object?

Back

When unbalanced forces act on an object, the object accelerates, meaning it changes its speed or direction.

Front

What is the Third Law of Motion?

Back

The Third Law of Motion states that for every action, there is an equal and opposite reaction.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

What is the difference between renewable and nonrenewable energy resources?

Back

Renewable energy resources can be replenished naturally (e.g., solar, wind), while nonrenewable resources are finite and cannot be replaced once used (e.g., coal, oil).

Front

What is an example of an unbalanced force?

Back

An example of an unbalanced force is when a person pushes a stationary car, causing it to move.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = ma, where F is force, m is mass, and a is acceleration.

Front

What is an example of the First Law of Motion in everyday life?

Back

An example of the First Law of Motion is a book resting on a table; it will remain at rest until someone pushes it.