3. Jasmine pousse un objet sur une distance de 15 m à une vitesse constante. Elle produit un
travail de 450 J sur l'objet. Quelle force Jasmine
exerce-t-elle sur l'objet?

Jasmine pushes an object a distance of  15 m at constant speed. It produces a  450J of work on the object. What strength Jasmine  does it exert on the object?

30J

Explanation:

Given parameters:

Distance moved  = 15m

Work done  = 450J

Unknown:

Strength Jasmine applied  = ?

Solution:

The strength Jasmine applied or exerted on the object is the force of pull that cause the motion of the object and the distance it was moved.

Now;

  Work done  = Force x distance

So;

       450  = Force x 15

          Force  =   = 30J

The particles of the medium just vibrate in place.

Explanation:

As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on. Particles of the medium don't actually travel along with the wave.