Work, Power, Energy, TVel

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium (like air) prevents further acceleration.

Front

What is the formula for Gravitational Potential Energy?

Back

PE = mgh, where PE is potential energy, m is mass, g is acceleration due to gravity, and h is height.

Front

How does air resistance change as a skydiver falls?

Back

Air resistance increases as the skydiver falls due to the increasing speed of the fall.

Front

Calculate the Gravitational Potential Energy of a 5 kg cat falling from a height of 3 m.

Back

PE = mgh = 5 kg * 9.8 m/s² * 3 m = 147 J.

Front

What is the formula for Kinetic Energy?

Back

KE = 1/2mv², where KE is kinetic energy, m is mass, and v is velocity.

Front

Define work in physics.

Back

Work is done when a force causes an object to move. It is calculated as W = Fd, where W is work, F is force, and d is distance.

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy. When work is done on an object, energy is transferred to that object.

Front

What is the unit of power?

Back

The unit of power is the Watt (W), which is equal to one Joule per second.

Front

Explain the concept of energy conservation.

Back

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

Front

What happens to the kinetic energy of an object as it slows down?

Back

As an object slows down, its kinetic energy decreases.