Conservation of Mechanical Energy

Front

What is the formula for Mechanical Energy (ME)?

Back

ME = KE + PE, where KE is Kinetic Energy and PE is Potential Energy.

Front

What is Kinetic Energy (KE) and how is it calculated?

Back

Kinetic Energy is the energy of an object in motion, calculated using the formula KE = 0.5 * m * v^2, where m is mass and v is velocity.

Front

What is Potential Energy (PE) and how is it calculated?

Back

Potential Energy is the energy stored in an object due to its position, calculated using the formula PE = m * g * h, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the principle of Conservation of Mechanical Energy?

Back

The principle states that in a closed system with no external forces, the total mechanical energy (sum of KE and PE) remains constant.

Front

How does height affect Potential Energy?

Back

Potential Energy increases with height; as an object's height increases, its Potential Energy increases if mass and gravity remain constant.

Front

What happens to Kinetic Energy as an object falls?

Back

As an object falls, its Kinetic Energy increases while its Potential Energy decreases, keeping the total Mechanical Energy constant.

Front

What is the value of gravitational acceleration (g) on Earth?

Back

The value of gravitational acceleration (g) on Earth is approximately 9.8 m/s².

Front

At what point is Kinetic Energy highest in a free-falling object?

Back

Kinetic Energy is highest just before the object hits the ground, where Potential Energy is at its lowest.

Front

What is the relationship between Kinetic Energy and speed?

Back

Kinetic Energy is proportional to the square of the speed; if speed doubles, Kinetic Energy increases by a factor of four.

Front

How do you calculate the total Mechanical Energy of an object?

Back

Total Mechanical Energy is calculated by adding Kinetic Energy and Potential Energy: ME = KE + PE.