contestada

Nicolo` works on weekends at a Slow Food Parlor. He fills a pitcher full of Cola, places it on the counter top and gives the 2.6 kg pitcher an 8.8 N forward push over a distance of 48 cm to send it to a customer at the end of the counter. Ignore friction. If the pitcher starts from rest, determine its final kinetic energy when Nicolo` is done pushing it.

Respuesta :

Answer:4.22 J

Explanation:

Given

mass of pitcher [tex]m=2.6\ kg[/tex]

Force applied  [tex]F=8.8\ N[/tex]

distance moved [tex]s=48\ cm[/tex]

Applying work-Energy theorem which states that work done by all the forces is equal to the change in kinetic energy of the object

Work done by force [tex]W=F\cdot s[/tex]

W=[tex]8.8\times 0.48 J[/tex]

change in kinetic Energy =[tex]\frac{1}{2}mv^2-0[/tex]

[tex]8.8\times 0.48=\Delta K.E.[/tex]

K.E.-0=[tex]4.22[/tex]

K.E.=[tex]4.22\ J[/tex]

Otras preguntas