Which of these is equivalent to the work-energy theorem?

The work done on an object if no other force acts on it is equal to its change in kinetic energy.

The work done on an object is equal to its change in potential energy.

The work done by friction is the friction force times the distance the object moves.

Kinetic energy is always conserved.

Question

Which of these is equivalent to the work-energy theorem?

The work done on an object if no other force acts on it is equal to its change in kinetic energy.

The work done on an object is equal to its change in potential energy.

The work done by friction is the friction force times the distance the object moves.

Kinetic energy is always conserved.

anonymous · Answer

@ybarrap ?

ybarrap · Answer

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

anonymous · Answer

That's what I thought! Thanks! Could you help me with another one?

ybarrap · Answer

Sure

anonymous · Answer

Okay, one sec and I'll start a new thread