Physics Energy Review 2021

Front

What is Kinetic Energy?

Back

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

Front

What is Gravitational Potential Energy (GPE)?

Back

Gravitational Potential Energy is the energy an object has due to its position in a gravitational field. It is calculated using the formula GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

Where is the car moving fastest in a roller coaster?

Back

The car is moving fastest at the lowest point of the track due to the conversion of potential energy to kinetic energy.

Front

What factors affect Kinetic Energy?

Back

Kinetic Energy is affected by the mass of the object and its speed. Increasing either mass or speed increases the kinetic energy.

Front

At which point does a pendulum have the greatest potential energy?

Back

A pendulum has the greatest potential energy at its highest point, where its speed is zero.

Front

At which point does a pendulum have the greatest kinetic energy?

Back

A pendulum has the greatest kinetic energy at its lowest point, where its speed is maximum.

Front

What type of energy is associated with a stretched spring?

Back

The energy associated with a stretched spring is called Elastic Potential Energy.

Front

What is the relationship between speed and Kinetic Energy?

Back

Kinetic Energy is directly proportional to the square of the speed of an object; if speed doubles, kinetic energy increases by a factor of four.

Front

What is the formula for calculating Gravitational Potential Energy?

Back

The formula for calculating Gravitational Potential Energy is GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What happens to the energy of a ball thrown upwards?

Back

As the ball rises, its kinetic energy decreases while its gravitational potential energy increases until it reaches the highest point.