Physics Concepts Flashcards

Front

Define Velocity

Back

Velocity is the rate of change of displacement of an object.

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 of motion.

Front

Define Acceleration

Back

Acceleration is the rate of change of velocity of an object.

Front

Define momentum

Back

Momentum is the product of an object's mass and its velocity.

Front

Define Impulse

Back

Impulse is the change in momentum resulting from a force applied over time.

Front

Define Impulsive Force

Back

An impulsive force is a force that acts for a very short duration.

OR

It is the rate of change of momentum.

Front

What is the Principle of Conservation of Momentum?

Back

The principle states that the total momentum of a closed system remains constant.

OR

Total momentum before a collision is equal to the total momentum after the collision, provided that there is no external force acting on the system.

Front

Define the Centre of Mass of an object

Back

The Centre of Mass of an object is the point in/on the object where the mass is assumed to be concentrated.

Front

Define Hooke's Law

Back

Hooke's Law states that the force needed to extend or compress a spring is proportional to the distance it is stretched or compressed, provided that the limit of proportionality is not exceeded.

Front

Define Limit of Proportionality

Back

The limit of proportionality is the point beyond which Hooke's Law no longer applies.