contestada

two 5.5 kg balls of clay are thrown at eachother. a red ball of clay is thrown at 9 m/s and a green ball of clay is thrown at 5 m/s. the balls stick together when they collide. what will be the post collision velocity of the balls?

Respuesta :

aliagola
Conservation of momentum

Pinitial=Pfinal

MaVa+MbVb=MtotalVfinal

(5.5)(9)+(5.5)(5)=(5.5+5.5)V
49.5+27.5=11V
77/11=V
7m/s=V