8th First Semester Final 24/25

Front

What does Newton's 1st Law (Law of Inertia) state?

Back

An object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, such as an object at a height.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is an electromagnetic wave?

Back

An electromagnetic wave is a wave that can travel through a vacuum and does not require a medium, such as light.

Front

What is the relationship between height and speed in a ramp experiment?

Back

The height of the ramp affects the speed of the car; higher ramps generally result in greater speeds due to increased potential energy.

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass cannot be created or destroyed in a closed system.

Front

What is Newton's 2nd Law (Law of Acceleration)?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's 3rd Law (Action-Reaction)?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What is a mechanical wave?

Back

A mechanical wave is a wave that requires a medium (solid, liquid, or gas) to travel through, such as sound waves.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.