Physics S1 Review Part 2

Front

What is inertia?

Back

Inertia is the tendency of an object to maintain its state of motion, whether at rest or moving at a constant velocity, unless acted upon by an external force.

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when all the forces acting on it are balanced, resulting in no net force and no acceleration.

Front

What is the action-reaction pair in physics?

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 magnitude and opposite direction on the first.

Front

How do vectors differ from scalars?

Back

Vectors have both magnitude and direction, while scalars have only magnitude.

Front

What is the formula for calculating force?

Back

Force (F) is calculated using the formula F = m * a, where m is mass and a is acceleration.

Front

What is the principle of conservation of momentum?

Back

The principle states that the total momentum of a closed system remains constant if no external forces act on it.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

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.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work = Force x Distance.