Momentum and Energy

Front

What is momentum?

Back

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

Front

What is kinetic energy?

Back

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

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in a system, representing the total energy available for doing work.

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

What is work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied, represented by the formula W = Fd, where W is work, F is force, and d is distance.

Front

What is internal energy?

Back

Internal energy is the total energy contained within a system, including kinetic and potential energy at the microscopic level.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, commonly calculated as gravitational potential energy using the formula PE = mgh, where PE is potential energy, m is mass, g is acceleration due to gravity, and h is height.

Front

How do you calculate the work done on an object?

Back

Work done on an object can be calculated using the formula W = Fd cos(θ), where W is work, F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.

Front

What is the relationship between work and kinetic energy?

Back

The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.

Front

What is Hooke's Law?

Back

Hooke's Law states that the force exerted by a spring is directly proportional to the distance it is stretched or compressed, represented by the formula F = kx, where F is the force, k is the spring constant, and x is the displacement.