Question

define power and derive work-engergy equation?
no irrevent answer

dani​

Answer 1

Answer:

In physics, power is the amount of energy transferred or converted per unit time.the unit of power is the watt, equal to one joule per second.

Explanation:

The principle of work and kinetic energy (also known as the work-energy theorem) states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle.

Derivation..

The relationship between the net force and the acceleration is given by the equation F = ma (Newton’s second law), and the particle’s displacement d, can be determined from the equation:

v2f=v2i+2ad

obtaining,

d=v2f−v2i2a

The work of the net force is calculated as the product of its magnitude (F=ma) and the particle’s displacement. Substituting the above equations yields:

W=Fd=mav2f−v2i2a=12mv2f−12mv2i=KEf−KEi=ΔKE