Nel suo giretto quotidiano, un gatto compie uno spostamento di 120m verso nord, seguito da un altro di 72,0 m verso ovest. Determina il modulo e la diezione dello spostamento che il gatto deve compiere per ritornare a casa.

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.