Work and Energy Test

Front

What is Kinetic Energy (KE)?

Back

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

Front

What factors affect Kinetic Energy more significantly?

Back

Velocity has a greater impact on Kinetic Energy than mass, as KE is proportional to the square of the velocity.

Front

How is Gravitational Potential Energy (GPE) calculated?

Back

Gravitational Potential Energy is calculated using the formula GPE = mgh, where m is mass, g is the acceleration due to gravity (9.81 m/s²), and h is height.

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy is the Joule (J).

Front

What is the relationship between mass and Kinetic Energy?

Back

Kinetic Energy increases with mass; if two objects are moving at the same speed, the one with greater mass will have more Kinetic Energy.

Front

What happens to the Kinetic Energy of an object if its velocity doubles?

Back

If the velocity of an object doubles, its Kinetic Energy increases by a factor of four, since KE is proportional to the square of the velocity.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

In a collision, what is conserved?

Back

In a closed system, both momentum and energy are conserved during a collision.

Front

What is an elastic collision?

Back

An elastic collision is one in which both momentum and kinetic energy are conserved.

Front

What is an inelastic collision?

Back

An inelastic collision is one in which momentum is conserved, but kinetic energy is not.