work power and energy 1

What is work in physics?

Work is defined as the energy transferred when a force is applied to an object over a distance.

How is work calculated?

Work (W) is calculated using the formula W = F * d * cos(θ), where F is the force applied, d is the distance moved in the direction of the force, and θ is the angle between the force and the direction of motion.

What is power?

Power is the rate at which work is done or energy is transferred over time.

How is power calculated?

Power (P) is calculated using the formula P = W / t, where W is work done and t is the time taken.

What are the units of work?

The SI unit of work is the Joule (J), which is equivalent to one Newton meter.

What are the units of power?

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

What is kinetic energy?

Kinetic energy is the energy possessed by an object due to its motion.

How is kinetic energy calculated?

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is the mass of the object and v is its velocity.

What is potential energy?

Potential energy is the energy stored in an object due to its position or configuration.

How is gravitational potential energy calculated?

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is the mass, g is the acceleration due to gravity, and h is the height above a reference point.

What is the work-energy principle?

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

What is the relationship between work and energy?

Work is a means of transferring energy from one system to another or transforming energy from one form to another