Review for QSE 2 2024

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. It can be converted into kinetic energy when the object moves.

Front

What happens to potential energy when an object moves from a higher position to a lower position?

Back

The potential energy decreases as the object loses height.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

How does friction affect the motion of a soccer ball?

Back

Friction slows down the soccer ball as it rolls across the ground.

Front

What is the transformation of energy from the sun to a tree?

Back

The energy from the sun (light energy) is transformed into chemical energy through the process of photosynthesis.

Front

What is a force diagram?

Back

A force diagram visually represents the forces acting on an object, helping to determine if the object is balanced or unbalanced.

Front

What does it mean for forces to be balanced?

Back

Balanced forces occur when two or more forces acting on an object are equal in size and opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces occur when the forces acting on an object are not equal, causing the object to accelerate in the direction of the net force.

Front

What is the action-reaction principle?

Back

For every action, there is an equal and opposite reaction. This means that when one object exerts a force on another, the second object exerts a force of equal size but in the opposite direction.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, which depends on its mass and velocity.