Physics PE, KE and Momentum

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How do you calculate gravitational potential energy for an object?

Back

PE = mgh, where PE is potential energy, m is mass in kilograms, g is the acceleration due to gravity (approximately 9.8 N/kg on Earth), and h is height in meters.

Front

What is kinetic energy?

Back

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

Front

How do you calculate kinetic energy for an object?

Back

KE = 1/2 mv², where KE is kinetic energy, m is mass in kilograms, and v is velocity in meters per second.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented as p = mv, where p is momentum, m is mass, and v is velocity.

Front

How do you calculate momentum?

Back

p = mv, where p is momentum, m is mass in kilograms, and v is velocity in meters per second.

Front

What is an inelastic collision?

Back

An inelastic collision is a type of collision where kinetic energy is not conserved, and the colliding objects stick together after the collision.

Front

What happens to momentum in a closed system during a collision?

Back

In a closed system, the total momentum before the collision is equal to the total momentum after the collision, according to the law of conservation of momentum.

Front

What is the law of conservation of energy?

Back

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

Front

What is the relationship between potential energy and height?

Back

Potential energy increases with height; as an object's height increases, its gravitational potential energy increases.