HUMPTY DUMPTY 2nd chance 2023

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the law of conservation of momentum?

Back

The law of conservation of momentum states that the total momentum of a closed system before a collision is equal to the total momentum after the collision.

Front

What is potential energy (PE)?

Back

Potential energy is the energy stored in an object due to its position or height. It is calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is kinetic energy (KE)?

Back

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

Front

How does potential energy change as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, assuming no energy is lost to air resistance.

Front

What is a responding variable in an experiment?

Back

The responding variable is the factor that is measured or observed in an experiment to see how it changes in response to the independent variable.

Front

What is an independent variable in an experiment?

Back

The independent variable is the factor that is changed or manipulated in an experiment to test its effects on the responding variable.

Front

How do you calculate the speed of an object?

Back

Speed is calculated by dividing the distance traveled by the time taken. The formula is Speed = Distance / Time.

Front

What is the relationship between mass and momentum?

Back

Momentum is directly proportional to mass. This means that if the mass of an object increases, its momentum increases if its velocity remains constant.

Front

What happens to the speed of a heavier car going down a ramp compared to a lighter car?

Back

The speed of a heavier car does not necessarily increase; it depends on other factors like friction and ramp height.